TW201817377A - Patch typed detection device of using myoelectric signal to detect muscle fatigue characterized by giving user a waening via the vibration of the device when the muscle fatigue occurs to user, so that the user may reduce the activity level to avoid muscle from injury - Google Patents

Abstract

The present invention provides a patch typed detection device of using myoelectric signal to detect muscle fatigue. The device comprises: a main body; and a vibration unit, a signal pre-processing electric circuit and a processing unit, which are disposed on the main body. The main body is provided with a patch connector for connecting to the external patch. The signal pre-processing electric circuit may acquire the myoelectric signal from the patch via the patch connector and process a signal treatment for the myoelectric signal to provide the myoelectric information. The processing unit may perform a time-frequency transform for the myoelectric information to generate the myoelectric frequency domain information and may drive the vibration unit to perform vibration when the frequency value in the myoelectric frequency domain information is lower than the threshold. The device uses said action to give user a waening via the vibration of the device when the muscle fatigue occurs to user, so that the user may reduce the activity level to avoid muscle from injury.

Description

   Patch-type detection device for detecting muscle fatigue by myoelectric signal   

The invention relates to a detection device, in particular to a patch-type detection device for detecting muscle fatigue through a myoelectric signal.

With the improvement of Chinese people's health consciousness, the current sports atmosphere has become increasingly prosperous. In high-intensity exercise that requires a lot of muscle strength, when the muscle fatigue of the athlete exceeds the threshold, if the exercise is not stopped or the amount of exercise load is reduced, it is easy to cause sports injury in the muscle fatigue.

In the conventional sports situations, the athletes subjectively evaluate whether the current exercise intensity exceeds the load of the muscular strength, and this assessment method is easily affected by the situation and its accuracy. Therefore, how to scientifically measure and evaluate the current state of muscle strength during exercise is increasingly important to the health of the athlete.

In summary, how to provide a technical means that can solve the problem of previous disclosure is a technical problem that needs to be solved in this field.

In order to solve the problem of previous disclosure, an object of the present invention is to provide a patch-type detection device that can conveniently detect the fatigue state of a user.

In order to achieve the above object, the present invention provides a patch-type detection device for detecting muscle fatigue by using myoelectric signals. The aforementioned device includes a main body, a vibration unit, a signal pre-processing circuit, and a processing unit provided on the main body. The aforementioned body is provided with a patch connector, so that the body is connected to the external patch through the patch connector. The aforementioned signal pre-processing circuit obtains EMG signals from the patch through the patch connector, and performs signal processing on the EMG signals to provide EMG information. The processing unit is connected to the signal pre-processing circuit and the vibration unit, and performs time-frequency conversion on the EMG information to generate EMG frequency domain information. In the EMG frequency domain information, the frequency value is lower than the threshold value to drive the vibration unit to vibrate .

In summary, the patch-type detection device for detecting muscle fatigue by the myoelectric signal according to the present invention can generate vibration when the user is tired by sensing and analyzing the myoelectric signal of the user's body. Reminders or alerts.

TH‧‧‧Threshold

FI‧‧‧Tired interval

H‧‧‧Interval height

1‧‧‧ patch detection device

10‧‧‧ Ontology

101‧‧‧First case

102‧‧‧Second shell

1020‧‧‧Embedded mouth

103‧‧‧SMD connector

11‧‧‧Circuit Board

111‧‧‧Vibration unit

112‧‧‧Signal pre-processing circuit

1121‧‧‧Instrumentation Amplifier

1122‧‧‧Filter

1123‧‧‧amplifier

113‧‧‧processing unit

12‧‧‧ battery

13‧‧‧Communication Module

14‧‧‧ communication transmission port

15‧‧‧ Tenoning element

2‧‧‧ Patch

21‧‧‧Ship Link

3‧‧‧ users

FIG. 1 is an exploded view of a patch-type detection device for detecting muscle fatigue using an electromyographic signal according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a patch detection device of the present invention.

FIG. 3 is a schematic block diagram of a circuit board of a patch detection device of the present invention.

FIG. 4 is a block diagram of a signal pre-processing circuit of a patch detection device of the present invention.

FIG. 5 is a schematic diagram of an embodiment of the present invention.

FIG. 6 is a schematic diagram of the time-frequency distribution of EMG frequency domain information according to the present invention.

The following describes specific embodiments to illustrate the implementation of the present invention, but it is not intended to limit the scope of the present invention.

Please refer to FIG. 1, which is an exploded view of a patch detection device 1 for detecting muscle fatigue by using an electromyographic signal according to an embodiment of the present invention. The aforementioned device includes a main body 10, a circuit board 11, a battery 12, and a communication module 13 provided on the main body 10. The aforementioned body 10 is provided with a patch joint 103 so that the body 10 can be connected to the external patch 2 through the patch joint 103. The patch joint 103 has a groove that can be combined with the patch connection portion 21 on the patch 2.

Please refer to FIG. 2, which is a schematic cross-sectional view of a patch detection device 1 according to an embodiment. The aforementioned patch detection device 1 is located between the contacts of the patch 2 in the direction of the second housing 102 (FIG. 1). The space between the part and the patch joint 103 (FIG. 1) is H, so that the patch detection device 1 can adapt to the structure of the human body.

Please refer to FIG. 3, which is a schematic block diagram of the circuit board 11. The aforementioned circuit board 11 further includes a vibration unit 111, a signal pre-processing circuit 112, and a processing unit 113. The processing unit 113 is electrically connected to the vibration unit 111 and the signal pre-processing circuit 112. The signal pre-processing circuit 112 obtains myoelectric signals from the patch 2 (FIG. 1) through the patch connector 103, and performs signal processing on the myoelectric signals to provide myoelectric information. The processing unit 113 performs time-frequency conversion on the EMG information to generate EMG frequency domain information, and drives the vibration unit 111 to vibrate when the frequency value in the EMG frequency domain information is lower than a threshold value.

In another embodiment, the aforementioned body 10 further includes a first casing 101 and a second casing 102. The opening shape of the second casing 102 matches the opening shape of the first casing 101. When the first casing 101 and the second casing 102 are combined, an accommodating space is formed therebetween. In another embodiment, a part of the body 10 is provided with an insertion port 1020, and a communication transmission port 14 (such as a waterproof USB connector) and a combination of the first casing 101 and the second casing can be provided in the insertion port 1020. 102 的 卡 mortism element 15.

The circuit board 11 is connected to the aforementioned communication module 13 and the communication transmission port 14 to provide a processing unit 113 for communication connection with an external electronic device (such as a computer, a mobile phone, a tablet computer, etc.) and transmit data. The battery 12 is electrically connected to the circuit board 11 and the communication module 13 to provide working power to the circuit board 11 and the communication module 13. The aforementioned communication module 13 may be selected from wireless communication interfaces such as Bluetooth, Wi-Fi, etc. The aforementioned communication transmission port 14 can be selected from communication interfaces such as USB, RS232, etc.

In another embodiment, a plurality of patch connectors 103 are disposed at the side ends of the second casing 102. In another embodiment, the space between the second housing 102 between the patches 2 and the patch joint 103 is a height H. In another embodiment, the aforementioned vibration unit 111 is a vibration motor.

Please refer to FIG. 4, which is a schematic diagram of an internal block of the aforementioned signal pre-processing circuit 112. The signal pre-processing circuit 112 further includes an instrumentation amplifier 1121, a filter 1122, and an amplifier 1123 connected in series. In another embodiment, the aforementioned analog value conversion port (ADC port) of the processing unit 113 is connected to the output terminal of the amplifier 1123 to sample the electromyographic information of the analog signal type.

In another embodiment, the aforementioned processing unit 113 uses Fourier transform / Fast Fourier transform to generate EMG frequency domain information (time domain-frequency domain conversion).

In another embodiment, the processing unit 113 communicates with an external electronic device through the communication module 13 to provide an electronic device setting threshold. In another embodiment, the aforementioned intermediate frequency value is a frequency value of 1/2 the power of the spectrum.

Please refer to FIG. 5, which is an embodiment of a patch-type detection device 1 for detecting muscle fatigue by using myoelectric signals. In this embodiment, the patch detection device 1 is placed on the left lateral femoral muscle of the user 3 after the device patch 2. The user 3 can use various electronic devices with communication functions (for example, : Computer device, mobile communication device, etc.) Connect with the patch detection device 1 and set the threshold of the patch detection device 1 through an electronic device. When the patch-type detection device 1 starts to operate, it will continuously obtain the user's EMG information in the time domain, and convert the time-domain EMG information into EMG frequency-domain information (Figure 6) (1) Calculate the frequency value MF in the EMG frequency domain information:

Among them, p ( f ) is the spectral distribution of the EMG information, and the middle frequency is the frequency of 1/2 the power of the spectrum.

Then, when the intermediate frequency value is lower than the preset threshold value TH, it is judged that the muscle of the user 3 has reached the fatigue level (muscle fatigue interval FI). At this time, the processing unit 113 will drive the vibration unit 111 to vibrate and pass through Vibration to "remind or alert" the user 3.

The above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the technical spirit of the present invention should be included in Within the scope of the patent in this case.

Claims (10)

    A patch-type detection device for detecting muscle fatigue by a myoelectric signal, comprising: a body, the body is provided with a patch connector, so that the body is connected with an external patch through the patch connector; a vibration unit, It is provided in the body; a signal preprocessing circuit is provided in the body, and the myoelectric signal is obtained from the patch through the patch connector, and the myoelectric signal is processed to provide myoelectric information; and a processing unit Is located in the body, the processing unit is connected to the signal pre-processing circuit and the vibration unit, and performs time-frequency conversion on the EMG information to generate EMG frequency domain information. The processing unit is based on the EMG frequency domain information. If the middle frequency value is lower than the threshold value, the vibration unit is driven to vibrate.         The patch detection device according to claim 1, wherein the body further comprises: a first casing; and a second casing, the opening shape of the second casing matches the opening shape of the first casing, When the first casing and the second casing are combined, an accommodating space is formed therebetween.         The patch-type detection device according to claim 2, wherein a plurality of the patch connectors are disposed at the side ends of the second casing.         The patch-type detection device according to claim 3, wherein a portion of the second housing between the patches is spaced apart from the patch joints.         The patch-type detection device according to claim 1, wherein the vibration unit is a vibration motor.         The patch detection device according to claim 1, wherein the signal pre-processing circuit further includes an instrumentation amplifier, a filter, and an amplifier connected in series.         The patch-type detection device according to claim 6, wherein the analog value conversion port of the processing unit is connected to the output end of the amplifier to sample the electromyography information of an analog type.         The patch detection device according to claim 1, wherein the processing unit uses fast Fourier transform to generate the electromyographic frequency domain information.         The patch detection device according to claim 1, further comprising a communication module connected to the processing unit. The processing unit communicates with an external electronic device through the communication module, so as to provide the electronic device with the settings. Threshold.         The patch detection device according to claim 1, wherein the intermediate frequency value is a frequency value of 1/2 the power of the spectrum.