CN214381477U

CN214381477U - Wisdom campus platform classroom state display terminal

Info

Publication number: CN214381477U
Application number: CN202120444439.9U
Authority: CN
Inventors: 张京京; 颜永佳; 周炳楠
Original assignee: Nanjing Juyuan Technology Co ltd
Current assignee: Nanjing Juyuan Technology Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-10-08
Anticipated expiration: 2031-03-01

Abstract

The utility model discloses a wisdom campus platform classroom state display terminal, including switching power supply voltage stabilizing circuit, low voltage stabilizing circuit, bluetooth module, main control circuit and lighting circuit, main control circuit includes main control chip and real-time clock chip, main control chip's 1 pin and first electric capacity are established ties, first electric capacity one end ground connection, main control chip's 4 pins are parallelly connected with main control chip's 1 pin, main control chip's 5 pins and second electric capacity and 3.3V voltage series connection, second electric capacity one end ground connection, main control chip's 15 pins and first resistance series connection, first resistance one end and 3.3V voltage series connection, main control chip's 16 pins and second resistance series connection, the one end and the 3.3V voltage series connection of second resistance. The utility model discloses regulation of control LED lamp that can convenient and fast to make class tablet can show different light, make things convenient for mr, classmate and the head of a family to distinguish various information.

Description

Wisdom campus platform classroom state display terminal

Technical Field

The utility model relates to a wisdom campus technical field specifically is wisdom campus platform classroom state display terminal.

Background

The class cards are necessary supplies of class marks of schools and are used for distinguishing information of classes. The general class cards are provided with class numbers corresponding to classes and used for indicating students, teachers, parents or other people to walk into the correct classes. In order to enrich the life of the campus, the electronic class cards appear on the market, and compared with the common class cards, the electronic class cards can provide other information except class numbers.

Since schools have various conditions such as class, school, vacation and the like, and the information provided by schools in the day and at night is different, an electronic class board convenient to adjust is needed for displaying the information conveniently and quickly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wisdom campus platform classroom state display terminal to solve the problem of proposing in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the intelligent campus platform classroom state display terminal comprises a switching power supply voltage stabilizing circuit, a low-voltage stabilizing circuit, a Bluetooth module, a main control circuit and a light-emitting circuit, wherein the main control circuit comprises a main control chip and a real-time clock chip, a pin 1 of the main control chip is connected with a first capacitor in series, one end of the first capacitor is grounded, a pin 4 of the main control chip is connected with the pin 1 of the main control chip in parallel, a pin 5 of the main control chip is connected with a second capacitor and a 3.3V voltage in series, one end of the second capacitor is grounded, a pin 1 of the real-time clock chip is connected with a third capacitor in series, one end of the third capacitor is grounded, a pin 2 of the real-time clock chip is connected with a first crystal oscillator in series, the first crystal oscillator is connected with the pin 1 of the real-time clock chip in parallel, and a pin 4 of the real-time clock chip is connected with the third capacitor in parallel, the 8 pins of the real-time clock chip are connected with a fourth capacitor in parallel, one end of the fourth capacitor is grounded, the 8 pins of the real-time clock chip are connected with a double-base diode in series, one end of the double-base diode is connected with 3.3V voltage in series, one end of the double-base diode is connected with the battery in series, one end of the battery is grounded, the third capacitor is C203, the fourth capacitor is C202, the double-base diode is D201, a 15 pin of the main control chip is connected with the first resistor in series, one end of the first resistor is connected with 3.3V voltage in series, a pin 16 of the main control chip is connected with the second resistor in series, one end of the second resistor is connected with 3.3V voltage in series, the switching power supply voltage stabilizing circuit generates 5V voltage to supply the low-voltage stabilizing circuit, the low-voltage stabilizing circuit is electrically connected with the main control circuit, and the main control circuit is electrically connected with the Bluetooth module and the light-emitting circuit respectively.

Further, the switching power supply voltage stabilizing circuit comprises a transformer, wherein a pin 1 of the transformer is connected with a fifth capacitor in series, the fifth capacitor is connected with a pin 8 of the transformer in series, a pin 2 of the transformer is connected with a pin 4 of an AC-DC chip and a third diode in series, the third diode is connected with a pin 4 of the AC-DC chip in parallel, the third diode is connected with a third resistor in series, the third resistor is connected with a fourth resistor and a thirteenth capacitor in series, the fourth resistor is connected with a thirteenth capacitor in parallel, the thirteenth capacitor is connected with a pin 1 of the transformer, a first electrolytic capacitor and a first inductor in series, the first electrolytic capacitor is connected with the first inductor in parallel, the first electrolytic capacitor is connected with a fifth resistor and a second inductor in series, and the fifth resistor is connected with the second inductor in parallel, the first inductor is connected with a second electrolytic capacitor and 3 pins of a bridge rectifier diode in series, the second electrolytic capacitor is connected with 4 pins of the bridge rectifier diode and the second inductor in series, 2 pins of the bridge rectifier diode are connected with a zero line in series, 1 pin of the bridge rectifier diode is connected with a live line in series, 3 pins of the transformer are connected with 2 pins of the AC-DC chip and a sixth capacitor in series, 1 pin of the AC-DC chip is connected with a fourteenth resistor and a sixth resistor in series, the fourteenth resistor is connected with the sixth resistor in parallel, the fourteenth resistor is connected with 4 pins of the transformer in series, the sixth resistor is connected with 3 pins of the transformer in parallel, 7 pins of the transformer are connected with a seventh resistor in series, the seventh resistor is connected with a seventh capacitor in series, and the seventh resistor and the seventh capacitor are connected with a fourth diode in parallel, the seventh capacitor is connected in series with a third electrolytic capacitor and a third inductor, the third inductor is connected in parallel with the third electrolytic capacitor, the third inductor is connected in parallel with a fourth electrolytic capacitor, the fourth electrolytic capacitor is connected in series with a voltage of 5V, the third resistor is R105, the fourth resistor is R102, the fifth resistor is R104, the sixth resistor is R108, the seventh resistor is R103, the fourteenth resistor is 106, the fifth capacitor is C101, the sixth capacitor is C111, the seventh capacitor is C104, the thirteenth capacitor is C105, the third diode is D102, the fourth diode is D101, the first inductor is L101, the second inductor is L103, the third inductor is L102, the first electrolytic capacitor is C107, the second electrolytic capacitor is C106, the third electrolytic capacitor is C102, the fourth electrolytic capacitor is C103, and the transformer is T101, the AC-DC chip is U103, and the model is LNK625 DG.

Further, the low voltage stabilizing circuit comprises an LDO chip, pin 1 of the LDO chip is connected in series with an eighth capacitor, one end of the eighth capacitor is connected in series with a 5V voltage, pin 2 of the LDO chip is connected in parallel with the eighth capacitor, one end of pin 2 of the LDO chip is connected to the ground, pin 3 of the LDO chip is connected in series with an eighth resistor, the eighth resistor is connected in parallel with pin 1 of the LDO chip, pin 4 of the LDO chip is connected in series with a ninth capacitor, one end of the ninth capacitor is connected to the ground, pin 5 of the LDO chip is connected in series with a tenth capacitor and a 3V voltage, one end of the tenth capacitor is connected to the ground, the eighth resistor is R107, the eighth capacitor is C108, the ninth capacitor is C110, the tenth capacitor is C109, the LDO chip is U102, and the model number is SGM2028-3.3 chip.

Further, the bluetooth module comprises a single chip microcomputer, wherein

pins

6, 7 and 8 of the single chip microcomputer are respectively connected in series with a four-pin socket, pin 7 is connected in parallel with a ninth resistor, pin 8 of the single chip microcomputer is connected in parallel with a tenth resistor, pin 9 of the single chip microcomputer is grounded, pin 10 of the single chip microcomputer is connected in series with a 3.3V voltage, pin 12 of the single chip microcomputer is connected in series with an eleventh resistor and a twelfth resistor, the eleventh resistor is connected in parallel with the twelfth resistor, the eleventh resistor is connected in series with a first light emitting diode, one end of the first light emitting diode is grounded, pin 17 of the single chip microcomputer is connected in series with a thirteenth resistor, the thirteenth resistor is connected in series with a second light emitting diode, one end of the second light emitting diode is grounded, pin 20 of the single chip microcomputer is connected in series with pin 2 of a second integrated circuit, pin 1 and pin 3 of the second integrated circuit are respectively grounded, the ninth resistor is R204, the tenth resistor is R205, the eleventh resistor is R207, the twelfth resistor is R211, the thirteenth resistor is R202, the first light emitting diode is LED202, the second light emitting diode is LED201, the single chip microcomputer is U201, and a chip with a model number of TP-04 is adopted.

Further, the light emitting circuit includes a light emitting chip, a second module and a third module, two SHELL pins of the light emitting chip are grounded, a 2 pin of the light emitting chip is connected in series with an M-pin, a 1 pin of the light emitting chip is connected in parallel with a 2 pin of the light emitting chip, a 3 pin of the light emitting chip is connected in series with a DATA pin, the M-pin is connected in series with an M-pin of a light emitting diode component, one end of the light emitting diode component is connected in series with a 5V voltage, the 1 pin of the second module is connected in series with a 1 pin of the third module, the 2 pin of the second module is connected in series with a 2 pin of the third module, the 3 pin of the second module is connected in series with a 3 pin of the third module, the 4 pin of the second module is connected in series with a 4 pin of the third module, the 1 pin of the second module is connected in series with an eleventh capacitor, one end of the eleventh capacitor is grounded, a pin 1 of the third module is connected in series with a twelfth capacitor, one end of the twelfth capacitor is grounded, a pin 3 of the second module is grounded, a pin 4 of the third module is connected in series with a pin DATA of the light emitting chip, the diode light emitting assembly includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a light emitting diode LED1 and a light emitting diode LED1, the resistor R1 is connected in series with the light emitting diode LED1, and the resistor R1 and the light emitting diode LED1 are connected in series, and the resistor R1 and the light emitting diode 1 are connected in series with the light emitting diode 1, The resistor R3, the resistor R4, the resistor R5, the resistor R6, the resistor R7, the resistor R8, the resistor R9, the resistor R10, the resistor R11, the resistor R12, the LED2, the LED3, the LED4, the LED5, the LED6, the LED7, the LED8, the LED9, the LED10, the LED11, and the LED12 are all connected in parallel, respectively, the eleventh capacitor is C2, the twelfth capacitor is C1, the light emitting chip is J204, the model is FFC-6P, the second module is LED13, and the third module is LED 14.

Further, the first capacitor is C205, the second capacitor is C204, the first resistor is R210, the second resistor is R209, the main control chip is U202, the adopted model is STM8L101F34, the real-time clock chip is U203, and the adopted model is PCF 8563/5.518.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses a set up power voltage stabilizing circuit, low voltage stabilizing circuit, bluetooth module, main control circuit and luminescent circuit, the regulation of control LED lamp that can convenient and fast to make class tablet can show different light, make things convenient for mr, classmate and head of a family to distinguish various information.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a circuit diagram of a voltage stabilizing circuit of a switching power supply of the present invention;

FIG. 2 is a circuit diagram of the low voltage stabilizing circuit of the present invention;

fig. 3 is a circuit diagram of the bluetooth module of the present invention;

fig. 4 is a circuit diagram a of the main control circuit of the present invention;

fig. 5 is a circuit diagram B of the main control circuit of the present invention;

fig. 6 is a circuit diagram C of the light emitting circuit of the present invention;

fig. 7 is a circuit diagram D of the light emitting circuit of the present invention;

fig. 8 is a circuit diagram E of the light emitting circuit of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: the intelligent campus platform classroom state display terminal comprises a switching power supply voltage stabilizing circuit, a low-voltage stabilizing circuit, a Bluetooth module, a main control circuit and a light-emitting circuit, wherein the main control circuit comprises a main control chip and a real-time clock chip, a pin 1 of the main control chip is connected with a first capacitor in series, one end of the first capacitor is grounded, a pin 4 of the main control chip is connected with the pin 1 of the main control chip in parallel, a pin 5 of the main control chip is connected with a second capacitor and a 3.3V voltage in series, one end of the second capacitor is grounded, a pin 1 of the real-time clock chip is connected with a third capacitor in series, one end of the third capacitor is grounded, a pin 2 of the real-time clock chip is connected with a first crystal oscillator in series, the first crystal oscillator is connected with the pin 1 of the real-time clock chip in parallel, and a pin 4 of the real-time clock chip is connected with the third capacitor in parallel, the 8 pins of the real-time clock chip are connected with a fourth capacitor in parallel, one end of the fourth capacitor is grounded, the 8 pins of the real-time clock chip are connected with a double-base diode in series, one end of the double-base diode is connected with 3.3V voltage in series, one end of the double-base diode is connected with the battery in series, one end of the battery is grounded, the third capacitor is C203, the fourth capacitor is C202, the double-base diode is D201, a 15 pin of the main control chip is connected with the first resistor in series, one end of the first resistor is connected with 3.3V voltage in series, a pin 16 of the main control chip is connected with the second resistor in series, one end of the second resistor is connected with 3.3V voltage in series, the switching power supply voltage stabilizing circuit generates 5V voltage to supply the low-voltage stabilizing circuit, the low-voltage stabilizing circuit is electrically connected with the main control circuit, and the main control circuit is electrically connected with the Bluetooth module and the light-emitting circuit respectively.

The switching power supply voltage stabilizing circuit comprises a transformer, wherein a pin 1 of the transformer is connected with a fifth capacitor in series, the fifth capacitor is connected with a pin 8 of the transformer in series, a pin 2 of the transformer is connected with a pin 4 of an AC-DC chip and a third diode in series, the third diode is connected with a pin 4 of the AC-DC chip in parallel, the third diode is connected with a third resistor in series, the third resistor is connected with a fourth resistor and a thirteenth capacitor in series, the fourth resistor is connected with a thirteenth capacitor in parallel, the thirteenth capacitor is connected with a pin 1 of the transformer, a first electrolytic capacitor and a first inductor in series, the first electrolytic capacitor is connected with the first inductor in parallel, the first electrolytic capacitor is connected with a fifth resistor and a second inductor in series, the fifth resistor is connected with the second inductor in parallel, the first inductor is connected with a pin 3 of a second electrolytic capacitor and a bridge rectifier diode in series, the second electrolytic capacitor is connected in series with the 4 pins of the bridge rectifier diode and the second inductor, the 2 pins of the bridge rectifier diode are connected in series with a zero line, the 1 pin of the bridge rectifier diode is connected in series with a live line, the 3 pins of the transformer are connected in series with the 2 pins of the AC-DC chip and a sixth capacitor, the 1 pin of the AC-DC chip is connected in series with a fourteenth resistor and a sixth resistor, the fourteenth resistor is connected in parallel with the sixth resistor, the fourteenth resistor is connected in series with the 4 pins of the transformer, the sixth resistor is connected in parallel with the 3 pins of the transformer, the 7 pins of the transformer are connected in series with a seventh resistor, the seventh resistor is connected in series with a seventh capacitor, the seventh resistor and the seventh capacitor are connected in parallel with a fourth diode, and the seventh capacitor is connected in series with a third electrolytic capacitor and a third inductor, the third inductor is connected with the third electrolytic capacitor in parallel, the third inductor is connected with the fourth electrolytic capacitor in parallel, the fourth electrolytic capacitor is connected with a voltage of 5V in series, the third resistor is R105, the fourth resistor is R102, the fifth resistor is R104, the sixth resistor is R108, the seventh resistor is R103, the fourteenth resistance is 106, the fifth capacitance is C101, the sixth capacitance is C111, the seventh capacitor is C104, the thirteenth capacitor is C105, the third diode is D102, the fourth diode is D101, the first inductor is L101, the second inductor is L103, the third inductor is L102, the first electrolytic capacitor is C107, the second electrolytic capacitor is C106, the third electrolytic capacitor is C102, the fourth electrolytic capacitor is C103, the transformer is T101, the AC-DC chip is U103, and the model is LNK625 DG.

The low-voltage stabilizing circuit comprises an LDO chip, wherein a pin 1 of the LDO chip is connected with an eighth capacitor in series, one end of the eighth capacitor is connected with a voltage of 5V in series, a pin 2 of the LDO chip is connected with the eighth capacitor in parallel, one end of a pin 2 of the LDO chip is connected with the ground, a pin 3 of the LDO chip is connected with an eighth resistor in series, the eighth resistor is connected with a pin 1 of the LDO chip in parallel, a pin 4 of the LDO chip is connected with a ninth capacitor in series, one end of the ninth capacitor is connected with the ground, a pin 5 of the LDO chip is connected with a tenth capacitor and a voltage of 3V in series, one end of the tenth capacitor is connected with the ground, the eighth resistor is R107, the eighth capacitor is C108, the ninth capacitor is C110, the tenth capacitor is C109, the chip is U102, and the model number is SGM2028-3.3 chip.

The Bluetooth module comprises a singlechip, wherein

pins

6, 7 and 8 of the singlechip are respectively connected in series with a four-pin socket, the pin 7 is connected in parallel with a ninth resistor, the pin 8 of the singlechip is connected in parallel with a tenth resistor, the pin 9 of the singlechip is grounded, the pin 10 of the singlechip is connected in series with a 3.3V voltage, the pin 12 of the singlechip is connected in series with an eleventh resistor and a twelfth resistor, the eleventh resistor is connected in parallel with the twelfth resistor, the eleventh resistor is connected in series with a first light-emitting diode, one end of the first light-emitting diode is grounded, the pin 17 of the singlechip is connected in series with a thirteenth resistor, the thirteenth resistor is connected in series with a second light-emitting diode, one end of the second light-emitting diode is grounded, the pin 20 of the singlechip is connected in series with the pin 2 of a second integrated circuit, and the pin 1 and the pin 3 of the second integrated circuit are respectively grounded, the ninth resistor is R204, the tenth resistor is R205, the eleventh resistor is R207, the twelfth resistor is R211, the thirteenth resistor is R202, the first light emitting diode is LED202, the second light emitting diode is LED201, the single chip microcomputer is U201, and a chip with a model number of TP-04 is adopted.

The light-emitting circuit comprises a light-emitting chip, a second module and a third module, wherein two SHELL pins of the light-emitting chip are grounded, a pin 2 of the light-emitting chip is connected with an M-pin in series, a pin 1 of the light-emitting chip is connected with a pin 2 in parallel, a pin 3 of the light-emitting chip is connected with a pin DATA in series, the M-pin is connected with an M-pin of a light-emitting diode component in series, one end of the light-emitting diode component is connected with a 5V voltage in series, a pin 1 of the second module is connected with a pin 1 of the third module in series, a pin 2 of the second module is connected with a pin 2 of the third module in series, a pin 3 of the second module is connected with a pin 3 of the third module in series, a pin 4 of the second module is connected with a pin 4 of the third module in series, a pin 1 of the second module is connected with an eleventh capacitor in series, and one end of the eleventh capacitor is grounded, a pin 1 of the third module is connected in series with a twelfth capacitor, one end of the twelfth capacitor is connected to ground, a pin 3 of the second module is connected to ground, a pin 4 of the third module is connected in series with a DATA pin of the light emitting chip, the diode light emitting assembly includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a light emitting diode LED10, a resistor R10 and a light emitting diode LED10, the resistor R10 and the light emitting diode LED10 are connected in series, and the resistor R10 and the light emitting diode R10 are connected in series with the light emitting diode LED10, the resistor R10 and the light emitting diode 10 and the resistor R10 and the light emitting diode 10 are connected in series, The resistor R4, the resistor R5, the resistor R6, the resistor R7, the resistor R8, the resistor R9, the resistor R10, the resistor R11, the resistor R12, the light emitting diode LED2, the light emitting diode LED3, the light emitting diode LED4, the light emitting diode LED5, the light emitting diode LED6, the light emitting diode LED7, the light emitting diode LED8, the light emitting diode LED9, the light emitting diode LED10, the light emitting diode LED11, and the light emitting diode LED12 are all connected in parallel, the eleventh capacitor is C2, the twelfth capacitor is C1, the light emitting chip is J204, the model is FFC-6P, the second module is LED13, and the third module is LED 14.

The first electric capacity is C205, the second electric capacity is C204, first resistance is R210, the second resistance is R209, the main control chip is U202, adopts the model to be STM8L101F34 chip, the real-time clock chip is U203, adopts the model to be PCF8563/5.518 chip.

The specific implementation mode is as follows: when the voltage stabilizing circuit is used, the input of 85-265V alternating current voltage can be ensured by the switching power supply voltage stabilizing circuit, and 5V direct current output can provide a 5V1A safe low-voltage direct current power supply system through the AC-DC isolation step-down conversion circuit; the low-voltage stabilizing circuit can provide a clean voltage source system for the control circuit to use by using a transformer with low voltage difference, low noise and low power consumption, so that the working environment of the acquisition circuit is good, and the low-voltage stabilizing circuit has the functions of current limitation and thermal protection, and can timely cut off power supply to carry out self-protection on equipment when a circuit fails; meanwhile, the Bluetooth module enables the Bluetooth master device to carry out data interaction, so that the master control device without wireless data transmission can carry out wireless data transmission; finally, the main control circuit receives command information sent by external Bluetooth through controlling the Bluetooth module, and controls the LED lamp, such as controlling a switch, adjusting the illumination intensity, adjusting the color of a full-color LED lamp and the like; the control signal that main control circuit sent is received to the luminescent circuit, adjust the luminescent state of LED lamp, thereby make the brilliant rays of LED lamp transmission different, be used for distinguishing different information, every class gate has the wisdom class tablet of an android system, and luminous class tablet is exactly adorned on this wisdom class tablet, control with this wisdom class tablet, also can realize thing networking control, and can be with the touch-sensitive screen, the cell-phone etc. through the switch of bluetooth control wisdom class tablet lamp and trade the colour, through power voltage stabilizing circuit, low voltage stabilizing circuit, bluetooth module, main control circuit and luminescent circuit, the regulation of control LED lamp that can convenient and fast, thereby make class tablet can show different light, make things convenient for mr, various information is distinguished to classmates and parents.

The utility model discloses a theory of operation:

referring to the attached drawings 1-8 of the specification, the utility model discloses a set up power voltage stabilizing circuit, low voltage stabilizing circuit, bluetooth module, main control circuit and luminescent circuit, the regulation of control LED lamp that can convenient and fast to make class tablet can show different light, make things convenient for mr, classmate and head of a family district to distinguish various information.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Wisdom campus platform classroom state display terminal, including switching power supply voltage stabilizing circuit, low voltage stabilizing circuit, bluetooth module, main control circuit and luminescent circuit, its characterized in that: the main control circuit comprises a main control chip and a real-time clock chip, wherein a pin 1 of the main control chip is connected with a first capacitor in series, one end of the first capacitor is grounded, a pin 4 of the main control chip is connected with the pin 1 of the main control chip in parallel, a pin 5 of the main control chip is connected with a second capacitor and a 3.3V voltage in series, one end of the second capacitor is grounded, a pin 1 of the real-time clock chip is connected with a third capacitor in series, one end of the third capacitor is grounded, a pin 2 of the real-time clock chip is connected with a first crystal oscillator in series, the first crystal oscillator is connected with the pin 1 of the real-time clock chip in parallel, a pin 4 of the real-time clock chip is connected with the third capacitor in parallel, a pin 8 of the real-time clock chip is connected with a fourth capacitor in parallel, one end of the fourth capacitor is grounded, and a pin 8 of the real-time clock chip is connected with a bipolar diode in series, one end of the double-base diode is connected with the 3.3V voltage in series, one end of the double-base diode is connected with the battery in series, one end of the battery is grounded, the third capacitor is C203, the fourth capacitor is C202, the double-base diode is D201, 15 pins of the main control chip are connected with the first resistor in series, one end of the first resistor is connected with the 3.3V voltage in series, 16 pins of the main control chip are connected with the second resistor in series, one end of the second resistor is connected with the 3.3V voltage in series, the switching power supply voltage stabilizing circuit generates 5V voltage to supply the low voltage stabilizing circuit, the low voltage stabilizing circuit is electrically connected with the main control circuit, and the main control circuit is electrically connected with the Bluetooth module and the light-emitting circuit respectively.

2. The smart campus platform classroom status display terminal as defined in claim 1, wherein: the switching power supply voltage stabilizing circuit comprises a transformer, wherein a pin 1 of the transformer is connected with a fifth capacitor in series, the fifth capacitor is connected with a pin 8 of the transformer in series, a pin 2 of the transformer is connected with a pin 4 of an AC-DC chip and a third diode in series, the third diode is connected with a pin 4 of the AC-DC chip in parallel, the third diode is connected with a third resistor in series, the third resistor is connected with a fourth resistor and a thirteenth capacitor in series, the fourth resistor is connected with a thirteenth capacitor in parallel, the thirteenth capacitor is connected with a pin 1 of the transformer, a first electrolytic capacitor and a first inductor in series, the first electrolytic capacitor is connected with the first inductor in parallel, the first electrolytic capacitor is connected with a fifth resistor and a second inductor in series, the fifth resistor is connected with the second inductor in parallel, the first inductor is connected with a pin 3 of a second electrolytic capacitor and a bridge rectifier diode in series, the second electrolytic capacitor is connected in series with the 4 pins of the bridge rectifier diode and the second inductor, the 2 pins of the bridge rectifier diode are connected in series with a zero line, the 1 pin of the bridge rectifier diode is connected in series with a live line, the 3 pins of the transformer are connected in series with the 2 pins of the AC-DC chip and a sixth capacitor, the 1 pin of the AC-DC chip is connected in series with a fourteenth resistor and a sixth resistor, the fourteenth resistor is connected in parallel with the sixth resistor, the fourteenth resistor is connected in series with the 4 pins of the transformer, the sixth resistor is connected in parallel with the 3 pins of the transformer, the 7 pins of the transformer are connected in series with a seventh resistor, the seventh resistor is connected in series with a seventh capacitor, the seventh resistor and the seventh capacitor are connected in parallel with a fourth diode, and the seventh capacitor is connected in series with a third electrolytic capacitor and a third inductor, the third inductor is connected with the third electrolytic capacitor in parallel, the third inductor is connected with the fourth electrolytic capacitor in parallel, the fourth electrolytic capacitor is connected with a voltage of 5V in series, the third resistor is R105, the fourth resistor is R102, the fifth resistor is R104, the sixth resistor is R108, the seventh resistor is R103, the fourteenth resistance is 106, the fifth capacitance is C101, the sixth capacitance is C111, the seventh capacitor is C104, the thirteenth capacitor is C105, the third diode is D102, the fourth diode is D101, the first inductor is L101, the second inductor is L103, the third inductor is L102, the first electrolytic capacitor is C107, the second electrolytic capacitor is C106, the third electrolytic capacitor is C102, the fourth electrolytic capacitor is C103, the transformer is T101, the AC-DC chip is U103, and the model is LNK625 DG.

3. The smart campus platform classroom status display terminal as defined in claim 1, wherein: the low-voltage stabilizing circuit comprises an LDO chip, wherein a pin 1 of the LDO chip is connected with an eighth capacitor in series, one end of the eighth capacitor is connected with a voltage of 5V in series, a pin 2 of the LDO chip is connected with the eighth capacitor in parallel, one end of a pin 2 of the LDO chip is connected with the ground, a pin 3 of the LDO chip is connected with an eighth resistor in series, the eighth resistor is connected with a pin 1 of the LDO chip in parallel, a pin 4 of the LDO chip is connected with a ninth capacitor in series, one end of the ninth capacitor is connected with the ground, a pin 5 of the LDO chip is connected with a tenth capacitor and a voltage of 3V in series, one end of the tenth capacitor is connected with the ground, the eighth resistor is R107, the eighth capacitor is C108, the ninth capacitor is C110, the tenth capacitor is C109, the chip is U102, and the model number is SGM2028-3.3 chip.

4. The smart campus platform classroom status display terminal as defined in claim 1, wherein: the Bluetooth module comprises a singlechip, wherein pins 6, 7 and 8 of the singlechip are respectively connected in series with a four-pin socket, the pin 7 is connected in parallel with a ninth resistor, the pin 8 of the singlechip is connected in parallel with a tenth resistor, the pin 9 of the singlechip is grounded, the pin 10 of the singlechip is connected in series with a 3.3V voltage, the pin 12 of the singlechip is connected in series with an eleventh resistor and a twelfth resistor, the eleventh resistor is connected in parallel with the twelfth resistor, the eleventh resistor is connected in series with a first light-emitting diode, one end of the first light-emitting diode is grounded, the pin 17 of the singlechip is connected in series with a thirteenth resistor, the thirteenth resistor is connected in series with a second light-emitting diode, one end of the second light-emitting diode is grounded, the pin 20 of the singlechip is connected in series with the pin 2 of a second integrated circuit, and the pin 1 and the pin 3 of the second integrated circuit are respectively grounded, the ninth resistor is R204, the tenth resistor is R205, the eleventh resistor is R207, the twelfth resistor is R211, the thirteenth resistor is R202, the first light emitting diode is LED202, the second light emitting diode is LED201, the single chip microcomputer is U201, and a chip with a model number of TP-04 is adopted.

5. The smart campus platform classroom status display terminal as defined in claim 1, wherein: the light-emitting circuit comprises a light-emitting chip, a second module and a third module, wherein two SHELL pins of the light-emitting chip are grounded, a pin 2 of the light-emitting chip is connected with an M-pin in series, a pin 1 of the light-emitting chip is connected with a pin 2 in parallel, a pin 3 of the light-emitting chip is connected with a pin DATA in series, the M-pin is connected with an M-pin of a light-emitting diode component in series, one end of the light-emitting diode component is connected with a 5V voltage in series, a pin 1 of the second module is connected with a pin 1 of the third module in series, a pin 2 of the second module is connected with a pin 2 of the third module in series, a pin 3 of the second module is connected with a pin 3 of the third module in series, a pin 4 of the second module is connected with a pin 4 of the third module in series, a pin 1 of the second module is connected with an eleventh capacitor in series, and one end of the eleventh capacitor is grounded, the 1 pin of the third module is connected in series with a twelfth capacitor, one end of the twelfth capacitor is connected to the ground, the 3 pin of the second module is connected to the ground, the 4 pin of the third module is connected in series with the DATA pin of the light emitting chip, the eleventh capacitor is C2, the twelfth capacitor is C1, the light emitting chip is J204, the adopted model is FFC-6P, the second module is LED13, and the third module is LED 14.

6. The smart campus platform classroom status display terminal as defined in claim 1, wherein: the first electric capacity is C205, the second electric capacity is C204, first resistance is R210, the second resistance is R209, the main control chip is U202, adopts the model to be STM8L101F34 chip, the real-time clock chip is U203, adopts the model to be PCF8563/5.518 chip.