TW201805768A - Wearable device featuring detection of tightness changes improving the stability and reliability in calculating the heart rate without affecting the comfort of wearing due to the adjustment of wearing tightness - Google Patents

Abstract

A wearable device capable of detecting tightness changes includes an annular belt which can tightly or loosely surround a body, a carrier attached to the annular belt, a light sensation unit sensing heartbeat changes of an animal by means of light and sending out a sensing signal, a metal member disposed in the carrier, and a control module. The metal member is capable of generating electrical induction with a skin surface and movable between a proximal position adjacent to or away from the skin surface and a first distant position. The control module reads a tightness coordination signal or a first response signal when the metal member is located at the proximal position or the distant position, then calculates a measurement value related to the heart rate according to the sensing signal, and calculates a first heart rate value or generates a warning message based on this measurement value according to a first compensation mechanism corresponding to the first response signal. In this way, the stability and reliability in calculating the heart rate are improved without affecting the comfort of wearing due to the adjustment of wearing tightness.

Description

Wearable device capable of detecting tightness change

The invention relates to a wearable device, in particular to a wearable device capable of detecting a change in tightness.

Generally speaking, there are three methods for monitoring heart rate. The first method is photoelectric detection, which mainly uses reflected light to detect changes in blood in blood vessels due to small fluctuations. The second method is to detect The method of ECG signal is similar to that of ECG. It mainly locates the electrode in the chest and detects the ECG pulse signal. The disadvantage is that it is susceptible to electromagnetic interference and the electrode must be close to the skin. This is a fatal problem for sports wear; The third method is the vibration measurement method, which mainly uses high-precision sensors to capture the vibration of the body caused by the heartbeat. The disadvantage is that it is not suitable for wearing during sports.

The mainstream wearable devices on the market, such as the light-sensitive Xiaomi bracelet and Apple Watch, generally use the photoelectric detection method. The main reasons are low power consumption and relatively low component costs. However, the photoelectric detection method is used in signal sampling. The most direct effect is that the wearer chooses different wearing tightness because of wearing comfort. There are shortcomings such as instability of the signal and insufficient reliability and stability.

Although each manufacturer has a special compensation design, such as using "light" to measure the change in distance, in addition to increasing power consumption and shortening the standby time of wearable devices, it is important to use light There are too many restrictions to measure the distance from the skin. For example, it is easy to have problems with unstable signals due to skin color, skin depth, tattoos, etc.

Therefore, an object of the present invention is to provide a wearable device capable of detecting tightness changes that can improve reliability and stability.

Therefore, the wearable device capable of detecting the change in tightness of the present invention is suitable for being worn on an animal's body. The body has a skin surface layer. The wearable device includes: an endless belt, a carrier, a light sensing unit, One metal part and one control module.

The loop can elastically surround the body.

The carrier is attached to the endless belt.

The light sensing unit senses changes in the heartbeat of the animal through light and sends a sensing signal.

The metal piece is disposed on the carrier and moves between a proximal position and a first distal position capable of generating electrical induction with the skin surface layer. At the proximal position, the metal piece is adjacent to the skin surface layer. In the first distal position, the metal member is far from the skin surface.

The control module is disposed on the carrier, and is electrically connected to the light sensing unit and the metal piece, and reads a tight-fit signal when the metal piece is located at the proximal end position, and the metal piece is located at the first distal end When reading the position, a first response signal is read, and then a measurement value related to the heart rate is calculated according to the sensing signal, and a first compensation mechanism corresponding to the first response signal is used to calculate based on the measurement value. Give a first heart rate value.

The wearable device capable of detecting elastic changes is suitable for being worn on an animal's body. The body has a skin surface layer. The wearable device includes: an endless belt, a carrier, a light sensing unit, and a metal. Software, and a control module.

The loop can elastically surround the body.

The carrier is attached to the endless belt.

The light sensing unit senses changes in the heartbeat of the animal through light and sends a sensing signal.

The metal piece is disposed on the carrier and moves between a proximal position and a first distal position capable of generating electrical induction with the skin surface layer. At the proximal position, the metal piece is adjacent to the skin surface layer. In the distal position, the metal piece is far from the skin surface.

The control module is disposed on the carrier, and is electrically connected to the light sensing unit and the metal piece, and reads a tight-fit signal when the metal piece is located at the proximal position, and when the metal piece is located at the distal position Read a response signal, then calculate a measurement value related to the heart rate according to the sensing signal, and generate a warning message based on the response signal to warn that the distance between the carrier and the skin surface layer is abnormal.

The effect of the present invention is: in the case that the wearing comfort is not affected due to the adjustment of the wearing tension, the first compensation mechanism or the warning message is used to improve the stability and reliability of the heart rate calculation in accordance with the change in the distance from the skin surface layer. Sex.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIGS. 1 and 2, and FIGS. 3 and 4, a first embodiment of a wearable device capable of detecting tight changes according to the present invention is suitable for being worn on a body 1 of an animal, the body 1 having a skin Surface layer 11. The wearable device includes an endless belt 2, a carrier 3, a light sensing unit 4, a metal piece 5, and a control module 6.

The endless belt 2 can elastically surround the body 1.

The carrier 3 is attached to the endless belt 2 and includes an inner surface 31 facing the skin surface layer 11.

The light sensing unit 4 includes a light transceiver module 41 formed on an inner surface 31 of the carrier 3. The optical transceiver module 41 senses changes in the heartbeat of the animal through light, and sends a sensing signal W.

The metal piece 5 is disposed on the inner surface 31 of the carrier 3 and surrounds the optical transceiver module 41 in this embodiment. The metal part 5 moves between a proximal end position L1, a first distal end position L2, and a second distal end position L3 capable of generating electrical induction with the skin surface layer 11 with the elastic change of the endless belt 2. The metal member 5 is further located in a disengaged position that does not generate electrical induction with the skin surface layer 11.

When the metal member 5 is located at the proximal position L1, the metal member 5 is adjacent to the skin surface layer 11, and when the metal member 5 is located at the first distal position L2, the metal member 5 is away from the skin surface layer 11 and is located at A limit position capable of generating electrical induction with the skin surface layer 11. When the metal member 5 is located at the second distal position L3, the metal member 5 is located between the skin surface layer 11 and the first distal position L2.

The control module 6 is disposed on the carrier 3 and is electrically connected to the light sensing unit 4 and the metal piece 5. When the metal piece 5 is located at the proximal position L1, a tight-fit signal M _on is read. A first response signal M1 is read when the metal member 5 is located at the first remote position L2, and a second response signal M2 is read when the metal member 5 is located at the second remote position L3. When the disengagement position is read, a disengagement signal M _off is read, and a measurement value D related to heart rate is calculated according to the sensing signal W. According to a first compensation mechanism corresponding to the first response signal M1, the measurement value D is used. As a basis, a first heart rate value D1 is calculated, a second heart rate value D2 is calculated based on a second compensation mechanism corresponding to the second response signal M2, and based on the measured value D, and according to the detachment signal M _Off determines that the wearable device is detached from the body 1 and controls the light sensing unit 4 to stop the sensing action.

It is worth noting that the aforementioned electrical induction may be a capacitance induction technology, or an electrical induction technology, or a resistance induction technology, whereby the tight-fit signal M _on , the first response signal M1, the second response signal M2, and the disengagement The signal M _{off is} respectively obtained by amplifying and analogizing one of the capacitance value, the inductance value and the resistance value respectively generated. In this embodiment, the aforementioned electrical induction uses a capacitive induction technology. Since those with ordinary knowledge in the art can infer the extended details based on the above description, they will not be described further.

When the wearer adjusts the tightness of the endless belt 2 because of different personal preferences, the carrier 3 and the light transmitting and receiving module 41 of the light sensing unit 4 abut against the skin surface layer 11 or with the skin When the surface layer 11 forms a gap, the metal part 5 will have different capacitance changes due to the gap between the metal part 5 and the skin surface layer 11, whereby the control module 6 can respond to the tight fit signal M _on or the generated The first response signal M1 or the second response signal M2 uses different mechanisms to calculate the heart rate.

For example, when the control module 6 reads the tight-fitting signal M _on , it means that the carrier 3 together with the light transmitting and receiving module 41 of the light sensing unit 4 is abutted on the skin surface layer 11. In this state, Since the optical transceiver module 41 can obtain a stable sensing signal W, the control module 6 can directly calculate the measured value D related to the heart rate based on the sensing signal W, without the need to bring in other compensation methods. .

When the control module 6 reads the first response signal M1 or the second response signal M2, it indicates that the carrier 3 together with the light transmitting and receiving module 41 of the light sensing unit 4 forms a gap with the skin surface layer 11, the The optical transceiver module 41 is likely to be unable to obtain a stable sensing signal W due to the aforementioned gap. As a result, the control module 6 will introduce a first compensation mechanism or a second compensation mechanism based on the measured value D. Calculate the first heart rate value D1 or the second heart rate value D2.

It is worth noting that, in this embodiment, the first compensation mechanism or the second compensation mechanism respectively uses the energy of light to increase, and when the metal member 5 is located at the first remote position, the light sensing unit is driven. 4 Energy of light required> When the metal member 5 is at the second distal position, energy of light required to drive the light sensing unit 4> When the metal member 5 is at the proximal position, the light sensor The energy of the light required by the unit 4.

Of course, the foregoing first compensation mechanism or the second compensation mechanism may also be introduced with a method of increasing the sampling frequency or other correction mechanisms, thereby improving the stability when the sensing signal W is obtained. Since those with ordinary knowledge in the art can infer the extended details based on the above description, they will not be described further.

5 and 6 are a second embodiment of the present invention, which also includes a carrier 3, a light sensing unit 4, a metal part 5, and a control module 6, and further includes a communication module 7. . The difference from this first embodiment lies in:

The carrier 3 includes a warning device 32. The warning device 32 may be a speaker that transmits sound, a light-emitting element that transmits bright light, a display that displays characters or graphics, or a vibrator that generates vibration.

In this embodiment, the metal piece 5 is located on the side of the optical transceiver module 41, moves between a proximal position and a distal position capable of generating electrical induction with the skin surface layer 11, and is further located not in contact with the skin The surface layer 11 generates a disengagement position for electrical induction. In the proximal position, the metal member 5 is adjacent to the skin surface layer 11, and in the distal position, the metal member 5 is away from the skin surface layer 11.

The control module 6 is electrically connected to the warning device 32, the light sensing unit 4, the metal part 5, and the communication module 7, and when the metal part 5 is located at the proximal position, a tight-fitting signal M _on is read. A response signal M is read when the metal piece 5 is in the distal position, and a disconnection signal M _off is read when the metal piece 5 is in the disengaged position. Then, a heart rate-related one is calculated based on the sensing signal W. Based on the measured value, an alert message S is generated according to the response signal M, and the wearable device is judged to be detached from the body 1 according to the detachment signal M _off , and the light sensing unit 4 is controlled to stop the sensing action. The warning message S and the warning device 32 may be one of sound, light, text, graphics, and vibration.

When the control module 6 reads the response signal M, it indicates that the carrier 3 together with the optical transceiver module 41 of the light sensing unit 4 forms a gap with the skin surface layer 11. The optical transceiver module 41 is likely to be The sensor module W cannot generate a stable sensing signal W. As a result, the control module 6 generates a warning message S, so that the warning message S is transmitted through the warning device 32, and warns the wearer that the carrier 3 and the skin surface layer 11 The distance between the loops is abnormal, and the tightness of the endless belt 2 needs to be adjusted.

At the same time, the control module 6 can also transmit the warning message S to the third party through the communication module 7 for the third party to help adjust the tightness of the loop 2 to make the gap between the carrier 3 and the skin surface layer 11 meets requirements. In this way, the third party can assist the wearer without self-care ability, thereby improving the stability when acquiring the sensing signal W.

Through the above description, the advantages of the foregoing embodiments can be summarized as follows:

1. The present invention can automatically improve the stability and reliability when calculating the heart rate with the compensation mechanism in accordance with the change in the distance from the skin surface layer 1, or notify the wearer to adjust the tightness required to the demand with the warning message S, which can also improve Stability and reliability when calculating heart rate.

2. Due to the aforementioned compensation mechanism, under the premise that the heart rate calculation is reliable, the wearer can arbitrarily adjust the tightness of the loop 2 to improve the comfort during long-term wear.

3. It is important that the present invention can obtain the change of the gap with the skin surface layer 11 without affecting the skin surface 11 without affecting the original sensing method of the light sensing unit 4 by using only one metal piece 5. Disturbances such as depth, tattoos, etc. not only have high sensing sensitivity but also low power consumption.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧ body
11‧‧‧ skin surface
2‧‧‧ annulus
3‧‧‧ carrier
31‧‧‧ inside
32‧‧‧Warning device
4‧‧‧light sensor
41‧‧‧Optical Transceiver Module
5‧‧‧ metal parts
6‧‧‧control module
7‧‧‧Communication Module
W‧‧‧sensing signal
L1‧‧‧ Proximal position
L2‧‧‧First remote position
L3‧‧‧Second remote position
L‧‧‧ remote position
M _on ‧‧‧ Tight fit signal
M _off ‧‧‧
M1‧‧‧First response signal
M2‧‧‧Second response signal
M‧‧‧ Response signal
D‧‧‧Measured value
D1‧‧‧First Heart Rate
D2‧‧‧Second heart rate value
S‧‧‧Warning message

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a perspective view illustrating a first embodiment of a wearable device capable of detecting tight changes according to the present invention. On a body of an animal; FIG. 2 is a block diagram of the first embodiment; FIG. 3 is a bottom view of the first embodiment; FIG. 4 is a schematic view illustrating the first embodiment and a skin surface Positional relationship; FIG. 5 is a bottom view illustrating a second embodiment of a wearable device capable of detecting tight changes according to the present invention; and FIG. 6 is a block diagram of the second embodiment.

11‧‧‧ skin surface

2‧‧‧ annulus

3‧‧‧ carrier

31‧‧‧ inside

5‧‧‧ metal parts

L1‧‧‧ Proximal position

L2‧‧‧First remote position

L3‧‧‧Second remote position

Claims (20)

A wearable device capable of detecting a change in elasticity is suitable for being worn on an animal's body, and the body has a skin surface layer. The wearable device includes: a loop, which can elastically surround the body; a carrier, attached On the annulus; a light-sensing unit that senses changes in the animal's heartbeat through the light and sends a sensing signal; a metal piece placed on the carrier and at a proximal end capable of generating electrical induction with the skin surface Between the position and a first distal position, the metal part is adjacent to the skin surface layer in the proximal position, and the metal part is far away from the skin surface layer in the first distal position; and a control module for setting A tight-fit signal is read when the carrier is electrically connected to the light-sensing unit and the metal part, and when the metal part is at the proximal position, when the metal part is at the first distal position, a signal is read. A first response signal, and then a measurement value related to the heart rate is calculated according to the sensing signal, and according to a first compensation mechanism corresponding to the first response signal, the measurement It is calculated based on a value of a first heart rate. The wearable device capable of detecting a change in tightness according to claim 1, wherein the carrier includes an inner surface facing the skin surface layer, and the metal member is disposed on the inner surface of the carrier. The wearable device capable of detecting tight changes according to claim 2, wherein the light sensing unit includes an optical transceiver module formed on an inner surface of the carrier, and the metal piece surrounds the optical transceiver module. The wearable device capable of detecting tight changes according to claim 2, wherein the light sensing unit has an optical transceiver module formed on an inner surface of the carrier, and the metal piece is located on one side of the optical transceiver module. The wearable device capable of detecting a tight change according to claim 1, wherein the first response signal and the tight fit signal are respectively converted by analogy from one of a capacitance value, an inductance value, and a resistance value generated. . The wearable device capable of detecting a change in tightness according to claim 1, wherein the metal piece is further located in a disengagement position that does not generate electrical induction with the skin surface layer, and when the metal piece is in the disengaged position, the control The module reads a disengagement signal and judges that the wearable device disengages from the body according to the disengagement signal. The wearable device capable of detecting a tight change according to claim 6, wherein the control module controls the light sensing unit to stop the sensing action after reading the disengagement signal. The wearable device capable of detecting a tight change according to claim 1, wherein the first compensation mechanism uses the energy of light to increase, and when the metal piece is located at the first remote position, the light sensing unit Energy of light required> Energy of light required by the light sensing unit when the metal member is at the proximal position. The wearable device capable of detecting a change in elasticity according to claim 8, wherein the metal member is further located at a second distal position between the skin surface layer and the first distal position, and the metal member is located at At the second remote position, the control module reads a second response signal and calculates a second heart rate value based on the measurement value based on a second compensation mechanism corresponding to the second response signal. The wearable device capable of detecting a tight change according to claim 9, wherein the second compensation mechanism uses the energy of light to increase, and when the metal part is located at the first remote position, the light sensing unit Energy of light required> When the metal piece is located at the second distal position, the energy of light required by the light sensing unit> When the metal piece is located at the proximal position, the light required by the light sensing unit energy. A wearable device capable of detecting a change in elasticity is suitable for being worn on an animal's body, and the body has a skin surface layer. The wearable device includes: a loop, which can elastically surround the body; a carrier, attached On the annulus; a light-sensing unit that senses changes in the animal's heartbeat through the light and sends a sensing signal; a metal piece placed on the carrier and at a proximal end capable of generating electrical induction with the skin surface Between a position and a distal position, in the proximal position, the metal piece is adjacent to the skin surface layer, in the distal position, the metal piece is away from the skin surface layer; and a control module is disposed on the carrier, And is electrically connected to the light sensing unit and the metal part, and reads a tight-fit signal when the metal part is at the proximal position, reads a response signal when the metal part is at the distal position, and then, according to The sensing signal calculates a measurement value related to the heart rate, and generates a warning message according to the response signal to warn that the distance between the carrier and the skin surface layer is different. . The wearable device capable of detecting a change in tightness according to claim 11, wherein the carrier has an inner surface facing the skin surface layer, and the metal member is disposed on the inner surface of the carrier. The wearable device capable of detecting tight changes according to claim 12, wherein the light sensing unit includes a light transceiver module formed on an inner surface of the carrier, and the metal piece surrounds the light transceiver module. The wearable device capable of detecting tight changes according to claim 12, wherein the light sensing unit includes an optical transceiver module formed on an inner surface of the carrier, and the metal piece is located at one side of the optical transceiver module. The wearable device capable of detecting tight changes according to claim 11, wherein the response signal and the tight fit signal are respectively converted by analogy from one of a capacitance value, an inductance value, and a resistance value generated respectively. The wearable device capable of detecting a change in tightness according to claim 11, wherein the metal piece is further located in a disengagement position that does not generate electrical induction with the skin surface layer, and when the metal piece is in the disengaged position, the control The module reads a disengagement signal and judges that the wearable device disengages from the body according to the disengagement signal. The wearable device capable of detecting a tight change according to claim 16, wherein the control module controls the light sensing unit to stop the sensing action after reading the disengagement signal. The wearable device capable of detecting tight changes according to claim 11, wherein the carrier includes a warning device, and the warning message is transmitted through the warning device. The wearable device capable of detecting tight changes according to claim 18, wherein the warning message may be one of sound, light, text, graphics, and vibration. The wearable device capable of detecting tightness changes as described in claim 11, further comprising a communication module electrically connected to the control module and used to communicate with a third party, and the control module further according to the response A signal to transmit the warning message to the third party through the communication module for the third party to help adjust the gap between the carrier and the skin surface layer.