CN114259653A

CN114259653A - Method and equipment for analyzing and adapting light source according to vision test data

Info

Publication number: CN114259653A
Application number: CN202111555256.5A
Authority: CN
Inventors: 徐春明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-01

Abstract

The invention belongs to the technical field of vision correction, and provides a method for analyzing an adaptive light source according to vision test data, which comprises the following steps: (1) registering an account at an APP terminal and binding equipment; (2) recording vision physical examination data at the APP terminal; (3) synchronizing the physical examination data of the eyesight to a database of vision correction implementation cases; (4) the vision correction implementation case database is matched with the corresponding vision correction implementation case according to the vision examination data and feeds the vision correction implementation case back to the APP terminal; (5) the APP terminal synchronizes the vision correction implementation case to the equipment terminal; (6) the equipment terminal analyzes the vision correction implementation case into light source management logic; (7) and the equipment end implements light source distribution according to the light source management logic. The invention adopts a 650nm red LED light source to record clinical verification cases, and adapts a more appropriate solution by matching the clinical verification cases in the vision correction implementation case database and combining the recorded vision examination data, thereby effectively solving the problems in the prior art.

Description

Method and equipment for analyzing and adapting light source according to vision test data

Technical Field

The invention belongs to the technical field of vision correction, and particularly relates to a method and equipment for analyzing and adapting a light source according to vision test data.

Background

According to the research of experts, the lack of infrared spectra received in daily life is one of the tribes of China with high myopia rate, at present, the conventional vision correction means adopts a light-feeding instrument to correct the vision, the light-feeding instrument integrates 650nm red light with the wavelength between 630 and 650nm which is beneficial to the human body in natural light to replace the natural light, the retina is irradiated by safe power and effective time, the retina is promoted to generate and release more dopamine, the elongation of the axis of the eye is inhibited, and the aim of controlling the myopia growth is achieved. In the prior art, the following problems mainly exist in the vision correction by adopting a light feeding instrument: (1) the light feeding instrument adopts 635nm-650nm weak laser, and the long-term use of the light feeding instrument causes damage to the eyeground of the eye; (2) the fixed uniform brightness is used for people with different eyesight, and an adjustment scheme cannot be made according to the actual requirements of individuals.

Disclosure of Invention

The invention aims to provide a method for analyzing and adapting a light source according to vision test data, which aims to solve the technical problem of vision correction by using a light-feeding instrument in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a method for analyzing and adapting a light source according to vision test data comprises a device end for realizing communication, an APP end and a vision correction implementation case database; the realization method comprises the following steps:

(1) registering an account at an APP terminal and binding equipment;

(2) recording vision physical examination data at the APP terminal;

(3) synchronizing the physical examination data of the eyesight to a database of vision correction implementation cases;

(4) the vision correction implementation case database is matched with the corresponding vision correction implementation case according to the vision examination data and feeds the vision correction implementation case back to the APP terminal;

(5) the APP terminal synchronizes the vision correction implementation case to the equipment terminal;

(6) the equipment terminal analyzes the vision correction implementation case into light source management logic;

(7) and the equipment end implements light source distribution according to the light source management logic.

Further, the physical examination data in the step (2) includes left-eye physical examination data and right-eye physical examination data.

Further, the light source management logic in step (6) includes an adaptation stage illuminance intensity, a training stage illuminance intensity, and a consolidation stage illuminance intensity.

The invention also provides equipment for implementing the method for adapting the light source according to the vision test data analysis, wherein the equipment end adopts a light-feeding instrument with a 650nm red light LED light source.

Furthermore, the equipment end comprises a base, a support frame and an irradiation mechanism arranged on the support frame; the irradiation mechanism comprises a cover body, a lamp tube arranged in the cover body through a lamp tube fixing frame, an LED lamp holder and a lamp bead arranged at the rear end of the lamp tube, an eye shield arranged at the front end of the cover body, a light shield arranged at the front end of the lamp tube, and a light filter positioned between the light shield and the eye shield; a control main board is installed in the base, and a touch screen is arranged at the front end of the base.

Further, the control mainboard comprises an MCU master control, an LED lamp driving circuit, a charging management circuit, a gravity sensor circuit, a voice circuit, a terminal connector and a power circuit, wherein the LED lamp driving circuit, the charging management circuit, the gravity sensor circuit, the voice circuit and the terminal connector are connected with the MCU master control.

Further, the MCU master control adopts a chip model TSSOP 20.

Further, the LED lamp driving circuit comprises an LED lamp connecting terminal and a wireless transmitting chip SOP14, the fourth connecting end of the LED lamp connecting terminal is connected with the pin 14 of the wireless transmitting chip SOP14, a resistor R32 is arranged between the two, the fifth connecting end of the LED lamp connecting terminal is connected with the pin 13 of the wireless transmitting chip SOP14, a resistor R39 is arranged between the pin 13 and the wireless transmitting chip SOP14, the six connecting ends of the LED lamp connecting terminals are connected with the pins 12 of the wireless transmitting chip SOP14, a resistor R40 is arranged between the two, the connecting end seven of the LED lamp connecting terminal is connected with the pin 10 of the wireless transmitting chip SOP14, a resistor R41 is arranged between the two, the eighth connecting end of the LED lamp connecting terminal is connected with the pin 9 of the wireless transmitting chip SOP14, a resistor R41 is arranged between the pin 9 and the resistor R41, a connecting end nine of the LED lamp connecting terminal is connected with a pin 8 of a wireless transmitting chip SOP14, a resistor R42 is arranged between the connecting end nine and the pin 8, and a pin 7 of a wireless transmitting chip SOP14 is connected with a pin 1 of a TSSOP 20;

a pin 1 of the wireless transmitting chip SOP14 is connected with a node S1, a node S1 is connected with a node S2 and a node S3, a node S2 is connected with a base electrode of a triode Q1, a resistor R14 is arranged between the node S1 and the node S2, a resistor R18 is arranged between the node S1 and the node S3, a collector of the triode Q1 is connected with the node S3, a resistor R15 is arranged between the collector of the triode Q1 and the node S4, an emitter of the triode Q1 is connected with the node S4, and a node S3 is connected with a first connecting end of an LED lamp connecting terminal;

a pin 2 of the wireless transmitting chip SOP14 is connected with a node S5, a node S5 is connected with a node S6 and a node S7, a node S6 is connected with a base electrode of a triode Q2, a resistor R22 is arranged between the node S5 and the node S6, a resistor R30 is arranged between the node S7 and the node S5, a collector of the triode Q2 is connected with the node S7, a resistor R23 is arranged between the collector of the triode Q2 and the node S7, an emitter of the triode Q2 is connected with the node S8, and a node S7 is connected with a second connecting end of the LED lamp connecting terminal;

a pin 3 of the wireless transmitting chip SOP14 is connected with a node S9, a node S9 is connected with a node S10 and a node S11, a node S10 is connected with a base of a triode Q3, a resistor R25 is arranged between the node S9 and the node S10, a resistor R31 is arranged between the node S11 and the node S9, a collector of the triode Q3 is connected with the node S11 and a resistor R26 is arranged between the two, an emitter of the triode Q3 is connected with the node S12, and a node S11 is connected with a third connecting end of the LED lamp connecting terminal.

Furthermore, the terminal connector comprises a software debugging port, wherein the connecting end of the software debugging port is connected with a pin 2 of TSSOP20 in a second mode, and the connecting end of the software debugging port is connected with a pin 3 of TSSOP20 in a third mode.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, a softer 650nm red light LED light source is adopted to be closer to a light source of natural sunlight, the illuminance of the light source is more accurately controlled by adjusting the LED brightness through PWM, the 650nm red light LED light source enables the product to be safer and more effective, and the problem that 635nm-650nm weak laser generates hidden trouble to the eye fundus after long-term use is effectively avoided.

(2) The invention sets the vision correction implementation case database, collects the clinical verification cases, then adapts a more appropriate solution by inputting the independent vision inspection data of the left eye and the right eye to the APP terminal and matching the clinical verification cases in the vision correction implementation case database and combining the input vision examination data, thereby overcoming the technical problem that the sampling fixed uniform brightness is fixedly used by different vision groups in the prior art.

(3) By adopting the invention, a user can experience more authoritative clinical schemes only by inputting physical examination data, the optical instrument is scientific and standard, and can be used more safely and more confidently, and the incomplete implementation scheme of errors caused by inaccurate analysis of the data of the visual physical examination report, insufficient cognition of the optical instrument product and incomplete vision knowledge of the instructor is avoided.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

Fig. 2 is an exploded view of the equipment side of the present invention.

Fig. 3 is a schematic diagram of a control main board according to the present invention.

Fig. 4 is a schematic diagram of a circuit principle of MCU master control in the present invention.

Fig. 5 is a schematic circuit diagram of the gravity sensor circuit according to the present invention.

Fig. 6 is a schematic circuit diagram of the charge management circuit according to the present invention.

Fig. 7 is a partial schematic diagram of the power circuit according to the present invention.

Fig. 8 is a second schematic circuit diagram of the power circuit of the present invention.

FIG. 9 is a schematic diagram of the circuit of the voice circuit of the present invention.

Fig. 10 is a schematic diagram of a part of a circuit of an LED lamp driving circuit according to the present invention.

Fig. 11 is a second schematic diagram of the circuit of the LED lamp driving circuit according to the present invention.

Fig. 12 is a schematic diagram of a circuit of an LED lamp driving circuit according to the present invention.

Fig. 13 is a partial schematic diagram of the internal circuit of the terminal connector according to the present invention.

Fig. 14 is a partial second schematic diagram of the internal circuit of the terminal connector according to the present invention.

Fig. 15 is a partial third schematic diagram of the internal circuit of the terminal connector according to the present invention.

Wherein, the names corresponding to the reference numbers are as follows: the LED lamp comprises a base 1, a support frame 2, a lamp barrel 3, an LED lamp holder 4, a lamp bead 5, an eye shade 6, a light shading cover 7, a light filter 8, a touch screen 9, an MCU master control unit 10, an LED lamp driving circuit 11, a charging management circuit 12, a gravity sensor circuit 13, a voice circuit 14, a terminal connector 14, a power circuit 15, a lower cover 16, an upper cover 17, a lamp barrel spring adjusting sheet 18, a lamp barrel rear fixing frame 19 and a lamp barrel front fixing frame 20.

Detailed Description

In order that those skilled in the art will more clearly understand and appreciate the present invention, the following detailed description of the present invention is provided in conjunction with the examples. It should be understood that the following specific embodiments are only used for explaining the present invention, and it is convenient to understand that the technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

Example 1

The embodiment provides a method for analyzing and adapting a light source according to vision test data, the design principle of the method is that the individual vision test data of the left eye and the right eye of each person are matched with corresponding implementation cases in a case database, and a more suitable and accurate corresponding correction scheme is obtained through analysis, so that the vision correction scheme is more scientific and reliable, the interference of human factors is avoided, and meanwhile, a 650nm red light LED light source which is closer to natural sunlight and softer is adopted as an improved light source.

As shown in fig. 1, the method includes an apparatus side, an APP side, and an eyesight correction implementation case database, where the APP side downloads to the intelligent side, for example: the smart phone, the tablet personal computer and the vision correction implementation case database are arranged on the background, communication interaction is realized among the smart phone, the tablet personal computer and the vision correction implementation case database, the implementation case database can be updated and optimized regularly, and each implementation case recorded in the implementation case database comprises corresponding vision examination data. During implementation, at first, register the account and bind equipment at the APP end, register after succeeding in, log in the account, at APP end entry user's eyesight check-up data, eyesight check-up data include left eye eyesight check-up data and right eye eyesight check-up data, and the independent data entry mode of binocular is adopted to this embodiment to accurate matching user's actual conditions.

After the APP end inputs vision examination data, the vision examination data are synchronized to a vision correction implementation case database, the vision correction implementation case database retrieves and matches vision correction implementation cases matched with the vision examination data in the vision correction implementation case database according to the received vision examination data, and then the matched vision correction implementation cases are fed back to the APP end. The database is converted by the big data of the computer according to tens of thousands of successful cases and the eye axis length, the corneal curvature, the diopter and the intraocular pressure corresponding to the physical examination data of the vision.

After receiving the vision correction implementation case, the APP end synchronizes data information of the vision correction implementation case to the equipment end, the equipment end analyzes the data information into light source management logic according to the received data information of the vision correction implementation case, the light source management logic is issued, and an LED lamp driving circuit of the equipment end implements light source issuing under the control of MCU master control, so that one complete vision correction operation of the optical instrument is completed; preferably, the present embodiment adjusts the brightness of the LED through PWM to control the illuminance of the light source more precisely.

Compared with the existing 635-650 nm weak laser, the 650nm red light LED light source is closer to the light source of natural sunlight and softer, and hidden dangers can not be generated on the eyeground of eyes after long-term use.

In this embodiment, the light source management logic includes adaptation phase illuminance intensity, training phase illuminance intensity, and consolidation phase illuminance intensity, and therefore contains the process of starting photophobia to adapt to a stable progressive and sprint for the user, and the solution is more scientific and reasonable.

Example 2

As shown in fig. 2 to 15, this embodiment further provides the device (device end) of embodiment 1, which is a red LED light source light-feeding instrument, and the red LED light source is adopted to replace the existing weak laser of 635nm to 650nm, specifically, the red LED light source light-feeding instrument includes a base, a support frame, and an irradiation mechanism disposed on the support frame; the irradiation mechanism comprises a cover body, a lamp tube arranged in the cover body through a lamp tube fixing frame, an LED lamp holder and a lamp bead which are arranged at the rear end of the lamp tube, an eye shield arranged at the front end of the cover body, a light shield arranged at the front end of the lamp tube, and a light filter positioned between the light shield and the eye shield; a control main board is installed in the base, and a touch screen is arranged at the front end of the base. The base and the support frame are used for providing an installation space for controlling the main board and the matched circuit, the support frame is used for supporting the irradiation mechanism, the irradiation mechanism is rotatably connected with the support frame, the irradiation mechanism can be conveniently adjusted relative to the range of the support frame, and the touch screen is mainly used for a user to operate and control the light feeding instrument.

In this embodiment, the cover body includes a lower cover rotatably connected to the support frame and an upper cover fastened and connected to the lower cover, and the two are fastened and then fixedly connected to each other. The lamp tube is two long tubular structures arranged in parallel, arc-shaped grooves are respectively arranged on two sides of the inner sides of the upper cover and the lower cover, and the arc-shaped grooves opposite to the upper cover and the lower cover are buckled together to form a circular structure matched with the lamp tube.

The lamp tube fixing frame comprises a lamp tube rear fixing frame and a lamp tube front fixing frame, the lamp tube rear fixing frame and the lamp tube front fixing frame are of hoop-shaped structures, and the front end and the rear end of the lamp tube are fixed relative to the cover body through the lamp tube rear fixing frame and the lamp tube front fixing frame respectively; the two light shields correspond to the two lamp tubes respectively, and the optical filter is positioned between the light shields and the eyeshade and is matched with the eyeshade in shape; the LED lamp holder and the lamp beads adopt 650nm red light LED light sources to replace the existing 635nm-650nm weak laser; the eye cover is preferably a rubber eye cover, so that the use comfort is improved. In a further preferred scheme, a lamp tube spring adjusting sheet for adjusting the lamp tube is further arranged at the position where the front end of the cover body is matched with the front end of the lamp tube.

In this embodiment, the control mainboard includes the MCU master control, the LED lamp drive circuit who is connected with the MCU master control, the management circuit that charges, gravity sensor circuit, voice circuit, terminal connector to and power supply circuit. The control main board is mainly used for realizing local operation control on the equipment, further can realize communication with the intelligent end and is used for the equipment to work in combination with the intelligent end; the MCU master control adopts a chip model TSSOP 20.

In this embodiment, the charging management circuit, the gravity sensor circuit, the voice circuit, and the power circuit may all adopt the existing mature circuit structure, and therefore, the detailed description of the circuits is omitted here. The corresponding circuit diagram in the figures is only one embodiment and should not limit the scope of protection of the above-described circuit.

The specific structure of the LED lamp driving circuit is as follows: comprises an LED lamp connecting terminal which is provided with a plurality of LED lamp connecting terminals, a wireless transmitting chip SOP14, a connecting end IV of an LED lamp connecting terminal is connected with a pin 14 of a wireless transmitting chip SOP14 and a resistor R32 is arranged between the two, a connecting end V of the LED lamp connecting terminal is connected with a pin 13 of the wireless transmitting chip SOP14 and a resistor R39 is arranged between the two, a connecting end VI of the LED lamp connecting terminal is connected with a pin 12 of a wireless transmitting chip SOP14 and a resistor R40 is arranged between the two, a connecting end VII of the LED lamp connecting terminal is connected with a pin 10 of the wireless transmitting chip SOP14 and a resistor R41 is arranged between the two, a connecting end VIII of the LED lamp connecting terminal is connected with a pin 9 of a wireless transmitting chip SOP14 and a resistor R41 is arranged between the two, a connecting end IX of the LED lamp connecting terminal is connected with a pin 8 of a wireless transmitting chip SOP14 and a resistor R42 is arranged between the two, a pin 7 of the wireless transmitting chip SOP14 is connected with a pin 1 of a TSSOP20, and a connecting end thirteen and a connecting end fourteen of the LED lamp connecting terminal are grounded; a pin 1 of the wireless transmitting chip SOP14 is connected with a node S1, a node S1 is connected with a node S2 and a node S3, a node S2 is connected with a base of a triode Q1 and a resistor R21, a resistor R14 is arranged between the node S1 and a node S2, a resistor R18 is arranged between the node S1 and the node S3, a collector of the triode Q1 is connected with the node S3, a resistor R15 is arranged between the collector of the triode Q1 and the node S3, an emitter of the triode Q1 is connected with a node S4, and a node S3 is connected with a first connecting end of an LED lamp connecting terminal; a pin 2 of the wireless transmitting chip SOP14 is connected with a node S5, a node S5 is connected with a node S6 and a node S7, a node S6 is connected with a base of a triode Q2 and a resistor R24, a resistor R22 is arranged between the node S5 and a node S6, a resistor R30 is arranged between the node S7 and the node S5, a collector of the triode Q2 is connected with the node S7, a resistor R23 is arranged between the collector of the triode Q2 and the node S7, an emitter of the triode Q2 is connected with a node S8, and a node S7 is connected with a second connecting end of the LED lamp connecting terminal; a pin 3 of the wireless transmitting chip SOP14 is connected with a node S9, a node S9 is connected with a node S10 and a node S11, a node S10 is connected with a base of a triode Q3 and a resistor R27, a resistor R25 is arranged between the node S9 and a node S10, a resistor R31 is arranged between the node S11 and the node S9, a collector of the triode Q3 is connected with the node S11, a resistor R26 is arranged between the collector of the triode Q3 and the node S3535, an emitter of the triode Q3 is connected with a node S12, and a node S11 is connected with a third connecting end of the LED lamp connecting terminal. The other ends of the emitting electrodes of the triode Q1, the triode Q2 and the triode Q3 and the resistors R21, R24 and R27 are connected with a resistor R28, and the other end of the resistor R28 is connected with VCC.

A pin 11 of the wireless transmitting chip SOP14 is grounded, a pin 4 is connected with VCC and a capacitor C12, the other end of the capacitor C12 is grounded, and a pin 5 and a pin 6 of the wireless transmitting chip SOP14 are connected with a terminal connector; the pin 2 and the pin 3 of the master control TSSOP20 are connected with a charging management circuit, the charging management circuit comprises a charging chip 4056 which is specifically connected with a pin 7 and a pin 6 of the 4056, the pin 4 of the master control TSSOP20 is connected with a pin 12 of a gravity sensor QFN12, the pin 5 and the pin 6 of the master control TSSOP20 are connected with the pin 2 and the pin 3 of a J3 (distance sensor) in a terminal connector, and the pin 7 of the master control TSSOP20 is grounded; a pin 8 of a master control TSSOP20 is connected with a pin 2 of J4 (key/indication/IR), a pin 20 is connected with a pin 3 of J4, a pin 9 is connected with BAT +, a pin 13 is connected with a pin 2 of QFN12, a pin 14 is connected with a pin 5 of J4, a pin 15 is connected with an RCB lamp, a pin 17 is connected with a pin 1 of J4, and a pin 18 and a pin 19 are connected with a pin 7 and a pin 6 of SOP8 in a voice circuit; j8 in the voice circuit is a horn seat, and J2 in the power circuit is a battery seat.

In this embodiment, the terminal connector includes a key/indicator/IR circuit (see fig. 14), a software debug port (see fig. 12), an RCB lamp circuit (see fig. 13), and a distance sensor (see J13 in fig. 14). The key/indication/IR and RCB lamp circuit is of an existing mature circuit structure, a connecting end of a software debugging port (J11, the model is XH-4-2_54A) is connected with a pin 2 of a TSSOP20 in a second mode, a connecting end of the software debugging port is connected with a pin 3 of a TSSOP20 in a third mode, and a pin 4 of the software debugging port is grounded.

The above description is the preferred embodiment of the present invention. It should be noted that, the skilled in the art can make several modifications without departing from the design principle and technical scheme of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A method for analyzing and adapting a light source according to vision test data is characterized by comprising a device end for realizing communication, an APP end and a vision correction implementation case database; the realization method comprises the following steps:

(1) registering an account at an APP terminal and binding equipment;

(2) recording vision physical examination data at the APP terminal;

2. The method of adapting a light source according to vision test data analysis of claim 1, wherein: the vision examination data in the step (2) comprises left-eye vision examination data and right-eye vision examination data.

3. The method of adapting a light source according to vision test data analysis of claim 2, wherein: and (4) the light source management logic in the step (6) comprises the illumination intensity in the adaptation stage, the illumination intensity in the training stage and the illumination intensity in the consolidation stage.

4. A device for implementing a method for adapting a light source according to vision test data analysis according to any of claims 1 to 3, characterized in that: the equipment end adopts a light feeding instrument with a 650nm red light LED light source.

5. The apparatus of claim 4, wherein: the equipment end comprises a base (1), a support frame (2) and an irradiation mechanism arranged on the support frame (2); the irradiation mechanism comprises a cover body, a lamp tube (3) arranged in the cover body through a lamp tube fixing frame, an LED lamp holder and a lamp bead (4) arranged at the rear end of the lamp tube (3), an eye shield (5) arranged at the front end of the cover body, a light shield (6) arranged at the front end of the lamp tube (3), and a light filter (7) positioned between the light shield (6) and the eye shield (5); a control main board is installed in the base (1), and a touch screen (8) is arranged at the front end of the base (1).

6. The apparatus of claim 5, wherein: the control main board comprises an MCU main control (9), an LED lamp driving circuit (10), a charging management circuit (11), a gravity sensor circuit (12), a voice circuit (13), a terminal connector (14) and a power circuit (15), wherein the LED lamp driving circuit, the charging management circuit, the gravity sensor circuit, the voice circuit and the terminal connector are connected with the MCU main control (9).

7. The apparatus of claim 6, wherein: the MCU master control (9) adopts a chip model TSSOP 20.

8. The apparatus of claim 7, wherein: the LED lamp driving circuit (10) comprises an LED lamp connecting terminal and a wireless emission chip SOP14, the fourth connecting end of the LED lamp connecting terminal is connected with the pin 14 of the wireless transmitting chip SOP14, a resistor R32 is arranged between the two, the fifth connecting end of the LED lamp connecting terminal is connected with the pin 13 of the wireless transmitting chip SOP14, a resistor R39 is arranged between the pin 13 and the wireless transmitting chip SOP14, the six connecting ends of the LED lamp connecting terminals are connected with the pins 12 of the wireless transmitting chip SOP14, a resistor R40 is arranged between the two, the connecting end seven of the LED lamp connecting terminal is connected with the pin 10 of the wireless transmitting chip SOP14, a resistor R41 is arranged between the two, the eighth connecting end of the LED lamp connecting terminal is connected with the pin 9 of the wireless transmitting chip SOP14, a resistor R41 is arranged between the pin 9 and the resistor R41, a connecting end nine of the LED lamp connecting terminal is connected with a pin 8 of a wireless transmitting chip SOP14, a resistor R42 is arranged between the connecting end nine and the pin 8, and a pin 7 of a wireless transmitting chip SOP14 is connected with a pin 1 of a TSSOP 20;

9. The apparatus of claim 8, wherein: the terminal connector (14) comprises a software debugging port, wherein the connecting end of the software debugging port is connected with a pin 2 of TSSOP20 in a second connection mode, and the connecting end of the software debugging port is connected with a pin 3 of TSSOP20 in a third connection mode.