CN218331739U

CN218331739U - Signal distortion degree measuring system of MCU based on TI company

Info

Publication number: CN218331739U
Application number: CN202222568452.2U
Authority: CN
Inventors: 谢昕宇
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-01-17
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to an electronic information technology, in particular to a signal distortion measuring system based on MCU of TI company, which comprises a sampling module, a frequency measuring module, an MCU, a Bluetooth module and an LCD; the sampling module comprises a first voltage follower circuit, a signal amplifier circuit and a differential amplifier circuit which are connected in sequence; the differential amplification electric circuit is connected with the MCU, and the Bluetooth module is respectively connected with the MCU and the mobile phone; the frequency measurement module comprises a second voltage follower circuit, a power amplifier circuit and a voltage comparator circuit which are connected in sequence; the voltage comparator circuit is connected with the MCU, and the MCU is connected with the LCD; the first voltage follower circuit and the second voltage follower circuit are both connected with an input signal. The system uses the MCU as a core component, and realizes the functions of measuring the distortion degree of a signal to be measured, displaying a waveform, transmitting the waveform to a mobile phone terminal for displaying and the like through keys of the MCU. The system has small volume, low power consumption, large storage space and low manufacturing cost.

Description

Signal distortion degree measuring system of MCU based on TI company

Technical Field

The utility model belongs to the technical field of electronic information, in particular to MCU's signal distortion degree measurement system based on TI company.

Background

The system is mainly used for occasions needing to ensure the communication quality, particularly microphones, sound equipment, earphones and the like. The signal distortion measuring system in the society at present has the problem that the volume is big, and is high in price, and the system uses MCU based on TI company to carry out analog-to-digital conversion, digital-to-analog conversion, data storage, and data display, so that the system is very small and exquisite, and the manufacturing cost is low.

In summary, a small signal distortion measurement system is particularly needed to meet social needs, in order to solve the problems of high price and large volume of the current market circulating products.

SUMMERY OF THE UTILITY MODEL

To the problem that the background art exists, the utility model provides a signal distortion degree measurement system based on the MCU of TI company.

In order to solve the technical problem, the utility model adopts the following technical scheme: a signal distortion measurement system based on an MCU of a TI company comprises a sampling module, a frequency measurement module, the MCU, a Bluetooth module and an LCD; the sampling module comprises a first voltage follower circuit, a signal amplifier circuit and a differential amplifier circuit which are connected in sequence; the differential amplification electric circuit is connected with the MCU, and the Bluetooth module is respectively connected with the MCU and the mobile phone; the frequency measurement module comprises a second voltage follower circuit, a power amplifier circuit and a voltage comparator circuit which are connected in sequence; the voltage comparator circuit is connected with the MCU, and the MCU is connected with the LCD; the first voltage follower circuit and the second voltage follower circuit are both connected with an input signal.

In the signal distortion measuring system based on the MCU of the company TI, the first voltage follower circuit and the second voltage follower circuit are the same and both include an OPA656 and a peripheral circuit; pin 3 of the OPA656 is connected to one end of a third resistor R3 and one end of a second resistor R2, respectively, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected to one end of a first resistor R1 and an input signal, respectively, and the other end of the first resistor R1 is grounded; pin 4 of the OPA656 is connected with a-5V power supply; pin 7 of the OPA656 is connected with a +5V power supply; pin 2 of the OPA656 is connected to one end of a fourth resistor R4, and the other end of the fourth resistor R4 is connected to pin 6 of the OPA656, which are respectively used as an output terminal OUT1 of the first voltage follower circuit and an output terminal OUT1' of the second voltage follower circuit.

In the signal distortion measuring system based on the MCU of the TI company, a signal amplifier circuit comprises a low-power amplifier and a high-power amplifier, the low-power amplifier and the high-power amplifier have the same structure and respectively comprise an OPA690 and a peripheral circuit, and a pin 2 of the OPA690 is respectively connected with one end of a sixth resistor R6 and one end of a seventh resistor R7; the other end of the sixth resistor R6 is respectively connected with one end of the fifth resistor R5 and the output end OUT1 of the first voltage follower circuit; the other end of the fifth resistor R5 is grounded; pin 3 of the OPA690 is connected to one end of the eighth resistor R8, and the other end of the eighth resistor R8 is grounded; the pin 4 of the OPA690 is connected with a-5V power supply; the other end of the seventh resistor R7 is connected to pin No. 6 of the OPA690 and serves as the output OUT2 of the OPA 690; pin 7 of OPA690 is connected to +5V power.

In the signal distortion measuring system based on the MCU of TI company, the differential amplifying circuit comprises a differential amplifier THS4151 and a peripheral circuit; a pin 1 of the differential amplifier THS4151 is respectively connected with one end of a ninth resistor R9 and one end of a tenth resistor R10, and the other end of the ninth resistor is grounded; a pin 8 of the differential amplifier THS4151 is respectively connected to one end of an eleventh resistor R11 and one end of a twelfth resistor R12, and the other end of the eleventh resistor R11 is connected to an output end OUT2 of the signal amplification circuit; the other end of the tenth resistor R10 is connected with a pin 4 of the differential amplifier THS4151 and is used as a negative phase output OUT3-; the other end of the twelfth resistor R12 is connected with pin No. 5 of the differential amplifier THS4151 and serves as a non-inverting output OUT3+; the pin No. 3 of the differential amplifier THS4151 is connected with a-5V power supply; pin 6 of the differential amplifier THS4151 is connected to +5V power.

In the signal distortion measuring system based on the MCU of TI company, the power amplifier circuit comprises an LM386 and a peripheral circuit; the No. 1 pin of the LM386 is connected with the output end OUT1' of the second voltage follower circuit; a pin No. 4 of the LM386 is connected with a pin No. 2, is respectively connected with one end of a fourteenth resistor R14, one end of a fifteenth resistor R15, one end of a first capacitor C1 and one end of a second capacitor C2, and is used as an output end OUT4 of the power amplifying circuit; a pin 3 of the LM386 is connected to one end of a thirteenth resistor R13, the other end of a fourteenth resistor R14, and the other end of a fifteenth resistor R15, respectively, and the other end of the fifteenth resistor R15 is grounded; the other end of the thirteenth resistor R13 is grounded; the other end of the first capacitor C1 is grounded; the other end of the second capacitor C2 is grounded.

In the above-mentioned signal distortion degree measurement system based on MCU of the company TI, the voltage comparator circuit includes TLV3501 and peripheral circuits; pins No. 1 and No. 2 of the TLV3501 are both connected with an output OUT4 of the power amplifying circuit; the No. 3 pin of the TLV3501 is connected with one end of an eighteenth resistor R18 and one end of a sixteenth resistor R16 respectively; pin number 4 of TLV3501 is grounded; the other end of the eighteenth resistor R18 is grounded; the other end of the sixteenth resistor R16 is connected with the No. 6 pin of the TLV3501 and one end of the seventeenth resistor R17 respectively; no. 8 pin of TLV3501 is grounded; the third capacitor C3 and the fourth capacitor C4 are connected in parallel to form a capacitor parallel branch, one end of the parallel branch is grounded, and the other end of the parallel branch is connected with a +5V power supply and a No. 7 pin of TLV3501 respectively; the other end of the seventeenth resistor R17 serves as an output terminal outbsm of the voltage comparator.

In the signal distortion measuring system based on the MCU of the TI company, the MCU is selected as MCU-PLUS-SDK-AM243X.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses use MCU as core component, realize measuring the distortion factor of the signal that awaits measuring through the button to MCU, show the waveform, transmit functions such as cell-phone end demonstration. The system has small volume, low power consumption, large storage space and low manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

fig. 2 is a circuit diagram of first and second voltage followers according to an embodiment of the present invention;

fig. 3 is a circuit diagram of a low power amplifier/high power amplifier according to an embodiment of the present invention;

fig. 4 is a circuit diagram of a differential amplifier according to an embodiment of the present invention;

fig. 5 is a circuit diagram of a power amplifier according to an embodiment of the present invention;

fig. 6 is a circuit diagram of a voltage comparator according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

The present invention will be further described with reference to the following specific examples, which should not be construed as limiting the invention.

The embodiment provides a signal distortion degree measuring system based on an MCU of a TI company, and solves the problems of measuring the distortion degree of a signal to be measured and the like. The device comprises a voltage follower, a low power amplifier, a high power amplifier, a signal comparator, a differential amplifier, bluetooth, an MCU and an LCD display screen. The measuring system of the embodiment can measure the distortion degree of the signal to be measured, store the distortion degree into the MCU, display the distortion degree on the LCD screen and send the distortion degree to the mobile phone.

The embodiment is realized by adopting the following technical scheme that the signal distortion measuring system based on the MCU of the TI company comprises a sampling module, a frequency measuring module, the MCU, a Bluetooth module and an LCD; the sampling module comprises a first voltage follower circuit, a signal amplifier circuit and a differential amplifier circuit which are connected in sequence; the differential amplification electric circuit is connected with the MCU, and the Bluetooth module is respectively connected with the MCU and the mobile phone; the frequency measurement module comprises a second voltage follower circuit, a power amplifier circuit and a voltage comparator circuit which are connected in sequence; the voltage comparator circuit is connected with the MCU, and the MCU is connected with the LCD; the first voltage follower circuit and the second voltage follower circuit are both connected with an input signal.

The signal amplifying circuit comprises a low-power amplifier and a high-power amplifier.

The working principle of the embodiment is as follows: the first voltage follower circuit and the second voltage follower circuit prevent front-stage and rear-stage crosstalk and transmit the crosstalk to the signal amplification circuit; the signal amplifying circuit amplifies the analog signal transmitted by the signal to be detected and transmits the analog signal to the differential amplifying circuit. The differential amplification circuit converts the signal from single end to double end and transmits the signal to the MCU. The signal comparison circuit converts the signal into high and low levels and transmits the high and low levels to the MCU. The MCU converts the analog signal into a digital signal by using an analog-to-digital converter, stores the digital signal in Flash and outputs the digital signal to an LCD display screen and a Bluetooth module; the Bluetooth module broadcasts the signal and broadcasts the signal to the mobile phone. The LCD screen converts the signal into an optical signal and displays the optical signal.

In specific implementation, as shown in fig. 1, a signal distortion measuring system based on MCU of the company TI includes a first voltage follower circuit, a second voltage follower circuit, a low power amplifier circuit, a high power amplifier circuit (signal amplifier circuit), a differential amplifier circuit, a bluetooth module, an MCU, and an LCD display screen. The embodiment can measure the distortion degree of the signal to be measured, store the distortion degree into the MCU, display the distortion degree on the LCD screen and send the distortion degree to the mobile phone.

The first voltage follower circuit, the low power amplifier circuit, the high power amplifier circuit, the differential amplifier circuit, the MCU and the Bluetooth module are connected in sequence in a wired mode; the second voltage follower circuit, the power amplifier circuit, the voltage comparator circuit, the MCU and the LCD display screen are connected in sequence in a wired mode.

The voltage follower is selected to be OPA659 with 10 ¹² The input impedance of the magnitude is high, the buffer characteristic is good, and the sampling circuit and the frequency measurement circuit can be effectively isolated.

The selection type of the low power amplifier and the high power amplifier is OPA690, and the low power amplifier and the high power amplifier are performance operational amplifiers and can amplify signals.

The differential amplifier is selected as THS4151, differential amplification is carried out on the original signal, the waveform is shifted to the range of 0-3.3V, and MCU reading processing is facilitated.

The voltage comparator is selected to be TLV3501, and the original signal is converted into a rectangular wave signal.

The MCU is selected to be MCU-PLUS-SDK-AM243X, and the SDK comprises a real-time multi-task kernel, network communication support, examples, a driver and a boot loader. The method can meet the calculation requirement of the system and ensure the low energy consumption of the system.

The power amplifier is selected to be LM386, and amplification of signals is achieved.

As shown in fig. 2, the first voltage follower circuit and the second voltage follower circuit are identical and each include an OPA656 and peripheral circuits; a pin No. 3 of the OPA656 is respectively connected with one end of a third resistor R3 and one end of a second resistor R2, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is respectively connected with one end of a first resistor R1 and an input signal, and the other end of the first resistor R1 is grounded; pin 4 of the OPA656 is connected with a-5V power supply; pin 7 of the OPA656 is connected with a +5V power supply; pin No. 2 of the OPA656 is connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is connected to pin No. 6 of the OPA656, which are respectively used as the output terminal OUT1 of the first voltage follower circuit and the output terminal OUT1' of the second voltage follower circuit.

As shown in fig. 3, the signal amplifier circuit includes a low power amplifier and a high power amplifier, which are the same and both include an OPA690 and a peripheral circuit, and the pin No. 2 of the OPA690 is connected to one end of the sixth resistor R6 and one end of the seventh resistor R7, respectively; the other end of the sixth resistor R6 is respectively connected with one end of the fifth resistor R5 and the output end OUT1 of the first voltage follower circuit; the other end of the fifth resistor R5 is grounded; a pin 3 of the OPA690 is connected to one end of the eighth resistor R8, and the other end of the eighth resistor R8 is grounded; the pin 4 of the OPA690 is connected with a-5V power supply; the other end of the seventh resistor R7 is connected to pin No. 6 of the OPA690 and serves as the output OUT2 of the OPA 690; pin No. 7 of OPA690 is connected to +5V power.

As shown in fig. 4, the differential amplification circuit includes a differential amplifier THS4151 and peripheral circuits; a pin 1 of the differential amplifier THS4151 is respectively connected with one end of a ninth resistor R9 and one end of a tenth resistor R10, and the other end of the ninth resistor is grounded; a pin 8 of the differential amplifier THS4151 is respectively connected to one end of an eleventh resistor R11 and one end of a twelfth resistor R12, and the other end of the eleventh resistor R11 is connected to an output end OUT2 of the signal amplification circuit; the other end of the tenth resistor R10 is connected with a pin 4 of the differential amplifier THS4151 and is used as a negative phase output OUT3-; the other end of the twelfth resistor R12 is connected with pin No. 5 of the differential amplifier THS4151 and serves as a non-inverting output OUT3+; the pin No. 3 of the differential amplifier THS4151 is connected with a-5V power supply; pin 6 of the differential amplifier THS4151 is connected to +5V power.

In the differential amplifier, the AD sampling interface on the MCU chip limits the level range to be 0-3.3V, and the original signal has a negative voltage value. In order to protect the MCU and measure relatively accurate data, a differential amplifier is adopted to carry out differential amplification on an original signal, and the waveform is shifted to the range of 0-3.3V, so that the MCU can read and process the waveform conveniently.

As shown in fig. 5, the power amplifier circuit includes an LM386 and peripheral circuits; the No. 1 pin of the LM386 is connected with the output end OUT1' of the second voltage follower circuit; a pin No. 4 of the LM386 is connected with a pin No. 2, and is respectively connected with one end of a fourteenth resistor R14, one end of a fifteenth resistor R15, one end of a first capacitor C1 and one end of a second capacitor C2, and the pins are used as an output end OUT4 of the power amplification circuit; a pin 3 of the LM386 is connected to one end of a thirteenth resistor R13, the other end of a fourteenth resistor R14, and the other end of a fifteenth resistor R15, respectively, and the other end of the fifteenth resistor R15 is grounded; the other end of the thirteenth resistor R13 is grounded; the other end of the first capacitor C1 is grounded; the other end of the second capacitor C2 is grounded.

In the power amplifier circuit, pin 1 of the LM386 chip is connected to an input signal, and the adjustment of the output signal amplitude is realized by the ratio of the resistances of the fourteenth resistor R14 and the fifteenth resistor R15. Pin 2 and pin 4 of the LM386 chip are connected, and the amplification factor of the signal is changed by changing the size of the fifteenth resistor R15. And the No. 2 pin of the LM386 chip is used as the output end of the signal and outputs the amplified signal.

As shown in fig. 6, the voltage comparator circuit includes a TLV3501 and peripheral circuits; the No. 1 pin and the No. 2 pin of the TLV3501 are both connected with the output OUT4 of the power amplifying circuit; a No. 3 pin of the TLV3501 is connected with one end of an eighteenth resistor R18 and one end of a sixteenth resistor R16 respectively; the No. 4 pin of the TLV3501 is grounded; the other end of the eighteenth resistor R18 is grounded; the other end of the sixteenth resistor R16 is respectively connected with the No. 6 pin of the TLV3501 and one end of the seventeenth resistor R17; the No. 8 pin of the TLV3501 is grounded; the third capacitor C3 and the fourth capacitor C4 are connected in parallel to form a capacitor parallel branch, one end of the parallel branch is grounded, and the other end of the parallel branch is respectively connected with a +5V power supply and a No. 7 pin of a TLV 3501; the other end of the seventeenth resistor R17 serves as an output terminal outbsm of the voltage comparator.

In a voltage comparator circuit, the sampling frequency of an on-chip ADC of an MCU is limited, and enough points are difficult to collect in real time to guarantee the frequency calculation precision. Therefore, the hysteresis comparator is used for converting the original signal into a rectangular wave signal, the rectangular wave signal is input into a GPIO interface of the MCU, the rising edge of the signal is captured by using a master frequency clock of the MCU, and the frequency of the original signal is indirectly calculated through an autocorrelation frequency measurement method.

The working flow of the system of the embodiment is as follows: the first voltage follower circuit, the signal amplifier circuit, the differential amplifier circuit, the MCU and the Bluetooth are connected in sequence in a wired mode; the second voltage follower circuit, the power amplifier circuit, the voltage comparator circuit, the MCU and the LCD are connected in sequence in a wired mode; the original signal is divided into two paths by the relay control, and the two paths are respectively used for signal amplification sampling and comparison frequency measurement. During frequency measurement, signals are isolated through the first voltage follower circuit, then the signals are input into the comparator TLV3501 to obtain rectangular waves containing frequency information, and the rectangular waves are directly input into the MCU for processing. During sampling, after signals are isolated by the second voltage follower circuit, the low-power amplifier or the high-power amplifier is selected according to the amplitude value to amplify, then the signals are input into the differential amplifier to obtain differential signals, and the differential signals are sampled by the on-chip ADC. After the collected signals are subjected to operation processing, the MCU drives the LCD display screen to display signal fundamental wave and harmonic normalized amplitude, waveform of one period and signal distortion degree, and meanwhile, the Bluetooth module sends data to the mobile phone end to display.

The above are only preferred embodiments of the present invention, and not intended to limit the scope and the embodiments of the present invention, and it should be appreciated by those skilled in the art that the equivalent alternatives and obvious modifications made in the present invention should be included within the scope of the present invention.

Claims

1. A signal distortion measurement system based on MCU of TI company is characterized in that: the device comprises a sampling module, a frequency measurement module, an MCU, a Bluetooth module and an LCD; the sampling module comprises a first voltage follower circuit, a signal amplifier circuit and a differential amplifier circuit which are connected in sequence; the differential amplification electric appliance circuit is connected with the MCU, and the Bluetooth module is respectively connected with the MCU and the mobile phone; the frequency measurement module comprises a second voltage follower circuit, a power amplifier circuit and a voltage comparator circuit which are connected in sequence; the voltage comparator circuit is connected with the MCU, and the MCU is connected with the LCD; the first voltage follower circuit and the second voltage follower circuit are both connected with an input signal.

2. The system for measuring signal distortion degree based on MCU of TI corporation as claimed in claim 1, wherein: the first voltage follower circuit and the second voltage follower circuit are the same and both comprise an OPA656 and a peripheral circuit; pin 3 of the OPA656 is connected to one end of a third resistor R3 and one end of a second resistor R2, respectively, the other end of the third resistor R3 is grounded, the other end of the second resistor R2 is connected to one end of a first resistor R1 and an input signal, respectively, and the other end of the first resistor R1 is grounded; pin 4 of the OPA656 is connected with a-5V power supply; pin 7 of the OPA656 is connected with a +5V power supply; pin 2 of the OPA656 is connected to one end of a fourth resistor R4, and the other end of the fourth resistor R4 is connected to pin 6 of the OPA656, which are respectively used as an output terminal OUT1 of the first voltage follower circuit and an output terminal OUT1' of the second voltage follower circuit.

3. The system for measuring signal distortion degree based on MCU of TI corporation as claimed in claim 2, wherein: the signal amplifier circuit comprises a low power amplifier and a high power amplifier, the low power amplifier and the high power amplifier have the same structure and respectively comprise an OPA690 and a peripheral circuit, and a No. 2 pin of the OPA690 is respectively connected with one end of a sixth resistor R6 and one end of a seventh resistor R7; the other end of the sixth resistor R6 is respectively connected with one end of the fifth resistor R5 and the output end OUT1 of the first voltage follower circuit; the other end of the fifth resistor R5 is grounded; pin 3 of the OPA690 is connected to one end of the eighth resistor R8, and the other end of the eighth resistor R8 is grounded; the pin 4 of the OPA690 is connected with a-5V power supply; the other end of the seventh resistor R7 is connected to pin No. 6 of the OPA690 and serves as an output OUT2 of the OPA 690; pin 7 of OPA690 is connected to +5V power.

4. The system of claim 3, wherein the signal distortion measurement system comprises: the differential amplifying circuit comprises a differential amplifier THS4151 and a peripheral circuit; a pin 1 of the differential amplifier THS4151 is respectively connected with one end of a ninth resistor R9 and one end of a tenth resistor R10, and the other end of the ninth resistor is grounded; a pin 8 of the differential amplifier THS4151 is respectively connected to one end of an eleventh resistor R11 and one end of a twelfth resistor R12, and the other end of the eleventh resistor R11 is connected to an output end OUT2 of the signal amplification circuit; the other end of the tenth resistor R10 is connected with a No. 4 pin of the differential amplifier THS4151 and is used as a negative phase output OUT3-; the other end of the twelfth resistor R12 is connected with a No. 5 pin of the differential amplifier THS4151 and serves as a non-inverting output OUT3+; the pin No. 3 of the differential amplifier THS4151 is connected with a-5V power supply; pin 6 of the differential amplifier THS4151 is connected to +5V power.

5. The system for measuring signal distortion degree based on MCU of TI company according to claim 4, wherein: the power amplifier circuit comprises an LM386 and a peripheral circuit; the No. 1 pin of the LM386 is connected with the output end OUT1' of the second voltage follower circuit; a pin No. 4 of the LM386 is connected with a pin No. 2, and is respectively connected with one end of a fourteenth resistor R14, one end of a fifteenth resistor R15, one end of a first capacitor C1 and one end of a second capacitor C2, and the pins are used as an output end OUT4 of the power amplification circuit; a pin 3 of the LM386 is connected to one end of a thirteenth resistor R13, the other end of a fourteenth resistor R14, and the other end of a fifteenth resistor R15, respectively, and the other end of the fifteenth resistor R15 is grounded; the other end of the thirteenth resistor R13 is grounded; the other end of the first capacitor C1 is grounded; the other end of the second capacitor C2 is grounded.

6. The system of claim 5, wherein the signal distortion measurement system comprises: the voltage comparator circuit comprises a TLV3501 and a peripheral circuit; the No. 1 pin and the No. 2 pin of the TLV3501 are both connected with the output OUT4 of the power amplifying circuit; a No. 3 pin of the TLV3501 is connected with one end of an eighteenth resistor R18 and one end of a sixteenth resistor R16 respectively; pin number 4 of TLV3501 is grounded; the other end of the eighteenth resistor R18 is grounded; the other end of the sixteenth resistor R16 is connected with the No. 6 pin of the TLV3501 and one end of the seventeenth resistor R17 respectively; pin 8 of TLV3501 is grounded; the third capacitor C3 and the fourth capacitor C4 are connected in parallel to form a capacitor parallel branch, one end of the parallel branch is grounded, and the other end of the parallel branch is connected with a +5V power supply and a No. 7 pin of TLV3501 respectively; the other end of the seventeenth resistor R17 serves as the output terminal outbb of the voltage comparator.

7. The system for measuring signal distortion degree based on MCU of TI corporation as claimed in claim 1, wherein: the MCU type is MCU-PLUS-SDK-AM243X.