A thin film pressure type tongue pressure detection device with zero point calibration function

Abstract

The application discloses a thin film pressure type tongue pressure detection device with zero point calibration function, which comprises a tongue pressure head, n pressure measuring points and an MCU arranged on the tongue pressure head, and a tongue pressure sensor arranged corresponding to each pressure measuring point. The tongue pressure detection is carried out by the following steps: the MCU acquires real-time zero point values of the n pressure measuring points at the moment of power-on on the tongue pressure head; based on the real-time zero point values and preset zero point values, the MCU calculates zero point deviations of the n pressure measuring points; based on the zero point deviations, the MCU carries out zero point calibration on pressure sampling data of the n pressure measuring points to obtain pressure sampling calibration data; the MCU carries out curve fitting on the pressure sampling calibration data of the n pressure measuring points to obtain n pressure-sampling value curves; the MCU acquires real-time pressure test data of the n pressure measuring points; and based on the real-time pressure test data, the MCU calculates current pressure values of the corresponding pressure measuring points by using the pressure-sampling value curves corresponding to each pressure measuring point.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a thin-film pressure tongue pressure detection device with built-in zero-point calibration function. Background Technology

[0002] Tongue pressure readings can reflect the force exerted by a patient's tongue. A tongue pressure probe is used to measure tongue pressure data at various points on the patient's tongue and uploads this data in real time to a host computer for analysis. The host computer then sends out rehabilitation training information to restore the patient's swallowing function.

[0003] Current thin-film pressure tongue depressor sensors have the advantages of small size and high sensitivity, and will not cause discomfort when placed in the mouth. However, the data measured by this thin-film pressure tongue depressor sensor will be offset with the increase of the number of uses and the deformation of the surface silicone. This means that the tongue depressor sensor cannot accurately reflect the force exerted by the patient's tongue.

[0004] Since a single diaphragm pressure tongue depressor has multiple pressure measurement points, and each pressure measurement point is equipped with a diaphragm pressure sensor, it is inevitable that there will be differences in the measurement data. This results in different pressure values ​​being measured at different pressure measurement points under the same pressure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a thin-film pressure tongue pressure detection device with built-in zero-point calibration function, which can eliminate the problem of data offset caused by the increase of the number of times the tongue pressure sensor is used and the deformation of the surface silicone, and can also eliminate the problem of inconsistent measurement data at different pressure measurement points under the same pressure due to sensor differences.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A membrane pressure-type tongue pressure detection device with built-in zero-point calibration function includes a tongue pressure head with an outer flexible silicone coating. The tongue pressure head has n pressure measurement points, each corresponding to a tongue pressure sensor. An MCU connected to the tongue pressure sensor is also located inside the tongue pressure head. The MCU pre-stores pressure sampling data from the n pressure measurement points. Each pressure measurement point's pressure sampling data includes m sample values, where the sampling pressures at the m sampling points corresponding to the m sample values ​​are different, and m is a preset constant. The membrane pressure-type tongue pressure detection device with built-in zero-point calibration function performs tongue pressure detection using the following steps. The MCU acquires the real-time zero-point values ​​of n pressure measuring points at the moment the tongue indenter is powered on; based on the real-time zero-point values ​​and preset zero-point values, the MCU calculates the zero-point deviation of each of the n pressure measuring points; based on the zero-point deviation, the MCU performs zero-point calibration on the pressure sampling data of each of the n pressure measuring points to obtain pressure sampling calibration data; the MCU uses the pressure sampling calibration data of each of the n pressure measuring points to perform curve fitting to obtain n pressure-sampling value curves; the MCU acquires the real-time pressure test data of the n pressure measuring points; based on the real-time pressure test data, the MCU uses the pressure-sampling value curve corresponding to each pressure measuring point to calculate the current pressure value of the corresponding pressure measuring point.

[0008] The beneficial technical effects of the present invention are as follows: the above-mentioned thin-film pressure tongue pressure detection device with built-in zero-point calibration function will automatically perform zero-point calibration at the moment of each power-on, eliminating the problem of data offset caused by the increase of the number of uses of the tongue pressure sensor and the deformation of the surface silicone; moreover, each pressure measuring electrode of the tongue pressure detection device performs zero-point calibration independently, thus eliminating the problem of inconsistent measurement data of different pressure measuring points under the same pressure due to sensor differences. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the thin-film pressure tongue pressure detection device with built-in zero-point calibration function of the present invention.

[0010] Figure 2 This is a schematic diagram of the tongue pressure detection process of the thin-film pressure tongue pressure detection device with built-in zero-point calibration function of the present invention;

[0011] Figure 3 This is a pressure-sampling value curve of the tongue depressor of the present invention. Detailed Implementation

[0012] To enable those skilled in the art to more clearly understand the purpose, technical solution, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0013] like Figure 1As shown, in one embodiment of the present invention, a thin-film pressure tongue pressure detection device with built-in zero-point calibration function includes a tongue pressure head 10 and a tongue pressure handle 20, the lower end of which extends to form the tongue pressure handle 20. The tongue pressure head 10 has five pressure measuring points 11, each corresponding to a tongue pressure sensor. The tongue pressure handle 20 contains an MCU 21, a conversion circuit 22, a power module 24, and an external interface 23. The MCU 21 is connected to the conversion circuit 22, the power module 24, and the external interface 23, respectively. The tongue pressure sensor is connected to the MCU 21 through the conversion circuit 22. It should be noted that in other embodiments of the present invention, the number of pressure measuring points 11 on the tongue pressure head 10 can be 7, 9, or other numbers.

[0014] The tongue pressure head 10 is coated with flexible silicone to achieve waterproofing without affecting the sensitivity of the thin-film pressure sensor. The tongue pressure sensors at the five pressure measurement points 11 can detect the pressure values ​​at corresponding positions on the tongue in real time. The conversion circuit 22 converts the pressure values ​​measured by the tongue pressure sensors into voltage values ​​that can be recognized by the MCU 21. The power module 24 supplies power to the tongue pressure head 10. The external interface 23 connects to the host computer. The MCU 21 is a data processor used to acquire and store data from the tongue pressure sensors, and performs zero-point determination, zero-point calibration, and pressure calculation based on the acquired data.

[0015] like Figure 1 As shown, the tongue depressor 10 is also provided with a left electrode 12 and a right electrode 13. The left electrode 12 and the right electrode 13 are connected to the host through the external interface 23 to form a circuit, thereby realizing the function of electrical stimulation of the tongue.

[0016] like Figure 2 As shown, the tongue pressure detection process of the membrane pressure type tongue pressure detection device with built-in zero-point calibration function includes the following steps:

[0017] S10 and MCU respectively acquire the real-time zero-point values ​​of the five pressure measurement points at the moment the tongue pressure head is powered on.

[0018] At the moment the tongue pressure head 10 is powered on, no pressure is applied to any of the pressure measuring points 11 on the tongue pressure head 10. The pressure value measured by the tongue pressure sensor at this moment is taken as the real-time zero point value of the corresponding pressure measuring point 11.

[0019] S20. Based on the real-time zero point value and the preset zero point value, the MCU calculates the zero point deviation of the five pressure measurement points respectively.

[0020] The preset zero-point values ​​of the five pressure measuring points can be set before the tongue pressure head 10 leaves the factory or during its first use, and the preset zero-point values ​​of the tongue pressure sensors at the five pressure measuring points are pre-stored in the MCU's flash memory. Before the tongue pressure head 10 leaves the factory or during its first use, a 0gl pressure test is performed on each of the five pressure measuring points 11 of the tongue pressure head 10, and the pressure value measured by the tongue pressure sensor is used as the preset zero-point value of the corresponding pressure measuring point 11.

[0021] By comparing the real-time zero-point value of pressure measurement point 11 with the corresponding preset zero-point value, the zero-point deviation of pressure measurement point 11 can be calculated, and thus the zero-point deviation of the five pressure measurement points can be calculated.

[0022] S21. The MCU determines whether the zero-point deviation of the pressure measurement point is greater than or equal to the damage threshold of the corresponding tongue pressure sensor. If so, it determines that the tongue pressure head is damaged and sends the tongue pressure head replacement information to the host. If not, it executes step S30.

[0023] The damage threshold fd of the tongue pressure sensor can be set according to the actual situation. In this step, the MCU judges whether the zero-point deviation at each of the 5 pressure measurement points is greater than or equal to the corresponding damage threshold fd of the tongue pressure sensor. If the zero-point deviation of at least one pressure measurement point is greater than or equal to the corresponding damage threshold fd of the tongue pressure sensor, the tongue pressure head is determined to be damaged and the host is sent with information to replace the tongue pressure head; if the zero-point deviation of all 5 pressure measurement points is less than the corresponding damage threshold fd of the tongue pressure sensor, then step S30 is executed.

[0024] S30. Based on the zero-point deviation, the MCU performs zero-point calibration on the pressure sampling data of the five pressure measurement points to obtain pressure sampling calibration data.

[0025] The pressure sampling data of the five pressure measuring points are pre-stored in the MCU's flash memory. Pressure sampling tests of 0gl, 10gl, 20gl, 30gl, 40gl, 50gl, 100gl, 150gl, 200gl, 250gl, and 300gl are performed on the five pressure measuring points 11 of the tongue pressure head 10, yielding 5×11 sample values. These 5×11 sample values ​​constitute the pressure sampling data of the five pressure measuring points. It should be noted that in other embodiments of the present invention, the number of pressure sampling points 11 can be 9, 12, or other numbers. For example, pressure sampling tests of 0gl, 10gl, 20gl, 30gl, 40gl, 50gl, 100gl, 150gl, and 200gl can be performed on the five pressure measuring points 11 of the tongue pressure head 10, with each pressure measuring point 11 sampled 9 times, yielding 5×9 sample values.

[0026] This step uses the following formula to perform zero-point calibration on the pressure sampling data from the five pressure measurement points to obtain the pressure sampling calibration data:

[0027] Tp k-i =Tp k-i +Tp k-e ,

[0028] Among them, Tp k-e Tp is the zero-point deviation of pressure measurement point k, which is equal to the difference between the preset zero-point value and the real-time zero-point value of pressure measurement point k. k-i The sampling values ​​for pressure measurement point k are: k = 1, 2, 3, 4, 5, which correspond to 5 pressure measurement points; i = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, which correspond to 11 pressure sampling points.

[0029] The S40 and MCU respectively used the pressure sampling calibration data from 5 pressure measurement points to perform curve fitting to obtain 5 pressure-sample value curves.

[0030] Figure 3 The pressure-sampling value curves of the tongue pressure head of the present invention are shown. The original curve in the figure is the pressure-sampling value curve obtained by curve fitting using the original pressure sampling data of the pressure measuring point, and the offset curve in the figure is the pressure-sampling value curve obtained by curve fitting using the pressure sampling calibration data of the pressure measuring point.

[0031] The S50 and MCU acquire real-time pressure test data from five pressure measurement points.

[0032] S60. Based on real-time pressure test data, the MCU calculates the current pressure value of the corresponding pressure point using the pressure-sample value curve (offset curve) corresponding to each pressure point.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent variations or modifications made within the scope of the claims should fall within the protection scope of the present invention.

Claims

1. A thin-film pressure tongue pressure detection device with built-in zero-point calibration function, comprising a tongue pressure head with an outer surface coated with flexible silicone, n pressure measuring points on the tongue pressure head, each pressure measuring point corresponding to a tongue pressure sensor, and an MCU connected to the tongue pressure sensor inside the tongue pressure head, characterized in that... The membrane pressure tongue pressure detection device with built-in zero-point calibration function performs tongue pressure detection using the following steps: S10 and MCU respectively acquire the real-time zero-point values ​​of n pressure measuring points at the moment the tongue pressure head is powered on; S20. Based on the real-time zero-point value and the preset zero-point value, the MCU calculates the zero-point deviation of n pressure measurement points respectively; S30. Based on the zero-point deviation, the MCU performs zero-point calibration on the pressure sampling data of n pressure measurement points to obtain pressure sampling calibration data. The pressure sampling data of the n pressure measurement points is pre-stored in the MCU. The pressure sampling data of each pressure measurement point includes m sampling values. The sampling pressures of the m sampling points corresponding to the m sampling values ​​are different, and m is a preset constant. S40 and MCU respectively use the pressure sampling calibration data from n pressure measurement points to perform curve fitting to obtain n pressure-sample value curves; S50 and MCU acquire real-time pressure test data from n pressure measurement points; S60. Based on real-time pressure test data, the MCU calculates the current pressure value of the corresponding pressure point using the pressure-sample value curve corresponding to each pressure point. The tongue depressor also has an external interface that can be connected to the host computer. This external interface communicates with the MCU. Before step S30, the following steps are also included: The MCU checks whether the zero-point deviation at each of the n pressure measurement points is greater than or equal to the corresponding tongue pressure sensor's damage threshold fd. If the zero-point deviation at at least one pressure measurement point is greater than or equal to the corresponding tongue pressure sensor's damage threshold fd, the MCU determines that the tongue pressure head is damaged and sends a replacement tongue pressure head message to the host. If the zero-point deviation at all n pressure measurement points is less than the corresponding tongue pressure sensor's damage threshold fd, then step S30 is executed.

2. The membrane pressure tongue pressure detection device with built-in zero-point calibration function as described in claim 1, characterized in that, The tongue depressor is also equipped with a left electrode and a right electrode, which are connected to the host through the external interface to form a circuit.

3. The membrane pressure tongue pressure detection device with built-in zero-point calibration function as described in claim 2, characterized in that, A conversion circuit is connected between the tongue pressure sensor and the MCU. This conversion circuit converts the pressure value measured by the tongue pressure sensor into a voltage value that can be recognized by the MCU.

4. The membrane pressure tongue pressure detection device with built-in zero-point calibration function as described in claim 3, characterized in that, The tongue depressor is also equipped with a power module, which is connected to the conversion circuit, MCU, and external interface respectively; the lower end of the tongue depressor extends to form a tongue depressor handle, and the conversion circuit, MCU, power module and external interface are located inside the tongue depressor handle.

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