CN213070110U

CN213070110U - Be used for kindergarten body temperature rifle communication interaction circuit

Info

Publication number: CN213070110U
Application number: CN201921907636.9U
Authority: CN
Inventors: 董红波
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-04-27
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a be used for mutual circuit of kindergarten's body temperature rifle communication, including power supply circuit, treater, 4G circuit, reset circuit, crystal oscillator circuit, BOOT circuit, draw serial ports interface, SPISRAM circuit, power indicator, draw power source interface, debugging interface and test lamp outward, STM32F1 chip U1's in the treater pin 1 meets with the power supply circuit after the step-down. This be used for kindergarten's body temperature rifle communication interaction circuit, power supply circuit is the power supply of whole circuit, and utilize TVS pipe D1 and D2 to make the circuit avoid surge current's damage, DB157S rectifier bridge can not divide positive negative pole when making power access circuit, make the circuit avoid the circuit damage that the human factor arouses, piezo-resistor R1 further absorbs surge current in the circuit, the protection circuit, the 4G circuit carries out intercommunication through serial ports and treater, accomplish the transmission of body temperature data, accomplish the interaction of data.

Description

Be used for kindergarten body temperature rifle communication interaction circuit

Technical Field

The utility model relates to a preschool education trade technical field specifically is a be used for kindergarten's body temperature rifle communication interaction circuit.

Background

The existing body temperature gun and the data platform are communicated through third-party equipment, third-party software is needed, the third-party equipment is independently powered, and the body temperature gun is large in size and high in cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for kindergarten body temperature rifle communication interaction circuit, the advantage that has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a communication interaction circuit for a kindergarten temperature gun comprises a power supply circuit, a processor, a 4G circuit, a reset circuit, a crystal oscillator circuit, a BOOT circuit, an external serial port interface, an SPISRAM circuit, a power indicator lamp, an external power interface, a debugging interface and a test lamp, wherein a pin 1 of an STM32F1 chip U1 in the processor is connected with the power supply circuit after voltage reduction, a pin 35 of an STM32F1 chip U1 is connected with a pin 19 of the 4G circuit, a pin 7 of an STM32F1 chip U1 is connected with the reset circuit,

pins

3, 4 and 5 of an STM32F1 chip U1 are connected with the crystal oscillator circuit, pins 28 and 60 of an STM32F 25 chip U1 are connected with

pins

3 and 4 of the BOOT circuit,

pins

16, 17 and 29 and 30 of an STM32F1 chip U1 are respectively connected with the external serial port interfaces,

pins

20, 21 and 22 of an STM32F1 chip 1 are connected with pins 23, pins of the SPISRAM 23, pins of the debugging circuit, pins 16, pins of the STM32F1 chip U735 and the debugging interface of the STM32F 6346 are connected with the debugging circuit, pins 37 and 38 of the STM32F1 chip U1 are connected with a test lamp;

the capacitor C1, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7 and the capacitor C8 form a filter circuit, and the processor 2 is not affected by circuit ripples in the using process.

Preferably, the power supply circuit comprises TVS tubes D1 and D2, a rectifier bridge U3, a voltage dependent resistor R1, a self-recovery fuse F1, a capacitor E1, an AMS117 chip U2, and an LT1086-5 chip U4, wherein grounded bidirectional voltage-stabilizing tubes D1 and D2 are respectively connected to the

corners

1 and 2 of the rectifier bridge U3, the corner 3 of the rectifier bridge U3 is respectively connected to the self-recovery fuse F1 and the voltage dependent resistor R1, the

corner

1 and 3 of the AMS117 chip U2 are respectively connected in parallel with a capacitor C3 and a super capacitor C2, the

corner

2 and 4 of the AMS117 chip U2 are respectively connected in parallel with a capacitor C2 and a super capacitor C1, and LT1086-5 chip U4 is respectively connected in parallel with a capacitor E3 and a capacitor E4.

Preferably, a pin 15 series resistor R8 parallel resistor R10 of the wirless smid die U5 of the 4G circuit is connected to the emitter and the base of the triode Q1, a collector series light emitting diode D3 and a resistor R4 of the triode Q1 are connected to the VCC5, a pin 9 of the wirless smid die U5, a resistor R9 and a resistor R11 are connected in parallel to the emitter and the base of the triode Q2, a collector series light emitting diode D4 and a resistor R5 of the triode Q2 are connected to the VCC5, light emitting diodes D3 and D4 indicate different states of the 4G circuit, and

pins

13 and 14 of the wirless smid die U5 die are connected to a capacitor C12 and a super capacitor E4 which form a filter circuit.

Preferably, the RESET circuit is composed of a capacitor C13, a resistor R3 and a switch KEY, the grounded resistor R3 and the switch KEY series resistor R3 are connected to VCC3.3, the capacitor C13 is used as a filter capacitor to filter out ripples, the resistor R3 is used as a pull-up resistor to pull the level of the RESET pin to logic "1" when the switch is opened, and when the switch is closed, the RESET pin is connected to logic "0" to RESET the system.

Preferably, the crystal oscillator circuit is composed of a crystal oscillator Y2, a capacitor C10, a capacitor C11, an SPXO _8M chip Y1 and a capacitor C9, the capacitor C10 and the capacitor C11 are connected to the 1 and 2 corners of the crystal oscillator Y2, the capacitor C9, the capacitor C10 and the capacitor C11 are used as filter circuits to ensure the stability of the crystal oscillator Y2, and the crystal oscillator Y2 provides a stable clock for the normal operation of the processor.

Preferably, the BOOT circuit is composed of 3 x 2 pins, a resistor R6 and a resistor R7, the resistor R6 and the resistor R7 pull up the level of the pin, and the processor is enabled to BOOT programs from different addresses according to different voltages connected to the socket connector.

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

this be used for kindergarten's body temperature rifle communication interaction circuit, power supply circuit is the power supply of whole circuit, and utilize TVS pipe D1 and D2 to make the circuit avoid surge current's damage, DB157S rectifier bridge can not divide positive negative pole when making power access circuit, make the circuit avoid the circuit damage that the human factor arouses, piezo-resistor R1 further absorbs surge current in the circuit, the protection circuit, the 4G circuit carries out intercommunication through serial ports and treater, accomplish the transmission of body temperature data, accomplish the interaction of data.

Drawings

FIG. 1 is a schematic diagram of a processor according to the present invention;

FIG. 2 is a schematic diagram of a power circuit of the present invention;

FIG. 3 is a schematic diagram of a 4G circuit of the present invention;

fig. 4 is a schematic diagram of a reset circuit of the present invention;

FIG. 5 is a schematic diagram of a crystal oscillator circuit according to the present invention;

FIG. 6 is a schematic diagram of the BOOT circuit of the present invention;

fig. 7 is a schematic diagram of an external serial port interface of the present invention;

FIG. 8 is a schematic diagram of the SPISRAM circuit of the present invention;

fig. 9 is a schematic diagram of an external power interface of the present invention;

FIG. 10 is a schematic diagram of a debug interface of the present invention;

FIG. 11 is a schematic diagram of a power indicator of the present invention;

fig. 12 is a schematic diagram of the test lamp of the present invention.

In the figure: 1. a power supply circuit; 2. a processor; 3. a 4G circuit; 4. a reset circuit; 5. a crystal oscillator circuit; 6. a BOOT circuit; 7. an external serial port interface; 8. a SPISRAM circuit; 9. an external power supply interface; 10. debugging an interface; 11. a power indicator light; 12. the lamp is tested.

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, a communication interaction circuit for a kindergarten temperature gun comprises a power supply circuit 1, a processor 2, a 4G circuit 3, a reset circuit 4, a crystal oscillator circuit 5, a BOOT circuit 6, an external serial port interface 7, an SPISRAM circuit 8, a power indicator lamp 11, an external power interface 9, a debugging interface 10 and a test lamp 12, wherein a pin 1 of an STM32F1 chip U1 in the processor 2 is connected with the power supply circuit 1 after voltage reduction, a pin 35 of an STM32F1 chip U1 is connected with a pin 19 of the 4G circuit 3, a pin 7 of an STM32F1 chip U1 is connected with the reset circuit 4,

pins

3, 4 and 5 of the STM32F1 chip U1 are connected with the crystal oscillator circuit 5, pins 28 and 60 of the STM32F1 chip U1 are connected with

pins

3 and 4 of the BOOT circuit 6,

pins

16, 17 and 29 of the STM32F1 chip U1, and pins 30 are connected with the external pin 7, pin 30 of the STM32F 6323 chip U9 and pin 20, the external serial port interface 20 and the pin 20 of the STM circuit 20 and the STM32F 6858

chip

20, 2. 5 and 6, pins 46 and 49 of the STM32F1 chip U1 are connected with

pins

2 and 3 of the debugging interface 10, and pins 37 and 38 of the STM32F1 chip U1 are connected with the test lamp 12;

Referring to fig. 2, the power circuit 1 includes TVS transistors D1 and D2, a rectifier bridge U3, a varistor R1, a self-recovery fuse F1, a capacitor E1, an AMS117 chip U2, and an LT1086-5 chip U4, wherein grounded bidirectional voltage regulators D1 and D2 are respectively connected to

corners

1 and 2 of the rectifier bridge U3, a corner 3 of the rectifier bridge U3 is respectively connected to the self-recovery fuse F1 and the varistor R1, a

corner

1 and 3 of the AMS117 chip U2 are connected in parallel to the capacitor C3 and the super capacitor C2, a

corner

2 and 4 of the 117 chip U2 are connected in parallel to the capacitor C2 and the super capacitor C1, and LT1086-5 chip U4 are connected in parallel to the capacitor E3 and the capacitor E4, respectively.

The TVS tubes D1 and D2 prevent the circuit from being damaged by surge current, the DB157S is a rectifier bridge, so that the positive and negative poles can not be separated when a power supply is connected into the circuit, the circuit is prevented from being damaged by human factors, the voltage dependent resistor R1 further absorbs the surge current in the circuit, and when the instantaneous current in the self-recovery fuse F1 circuit is too large, the fuse is fused, so that the safety of a subsequent circuit is protected.

Referring to fig. 3, a pin 15 series resistor R8 parallel resistor R10 of the wirlessoudle chip U5 of the 4G circuit 3 is connected to the emitter and base of the triode Q1, a collector series led D3 and resistor R4 of the triode Q1 are connected to VCC5, a pin 9 of the wirlessoudle chip U5, a resistor R9 and a resistor R11 are connected in parallel to the emitter and base of the triode Q2, a collector series led D4 and a resistor R5 of the triode Q2 are connected to VCC5, the leds D3 and D4 indicate different states of the 4G circuit 3,

pins

13 and 14 of the wirlessoudle chip U5 are connected to a capacitor C12 and a super capacitor E4 which form a filter circuit, and the 4G circuit 3 communicates with the processor 2 through a serial port.

Referring to fig. 4, the RESET circuit 4 is composed of a capacitor C13, a resistor R3, and a switch KEY, the grounded resistor R3 and the switch KEY series resistor R3 are connected to VCC3.3, the capacitor C13 is used as a filter capacitor to filter out ripples, the resistor R3 is used as a pull-up resistor to pull the level of the RESET pin to logic "1" when the switch is opened, and when the switch is closed, the RESET pin is connected to logic "0" to RESET the system.

Referring to fig. 5, the crystal oscillator circuit 5 is composed of a crystal oscillator Y2, a capacitor C10, a capacitor C11, an SPXO _8M chip Y1, and a capacitor C9, the capacitor C10 and the capacitor C11 are connected to the 1, 2 corners of the crystal oscillator Y2, the capacitor C9, the capacitor C10, and the capacitor C11 are used as a filter circuit to ensure the stability of the crystal oscillator Y2, and the crystal oscillator Y2 provides a stable clock for the processor 2 to normally operate.

Referring to fig. 6, the BOOT circuit 6 is composed of pin 3 x 2, a resistor R6 and a resistor R7, the resistor R6 and the resistor R7 pull up the pin level, and the processor 2 BOOTs the program from different addresses according to the voltage applied to the socket connector.

Referring to fig. 7 and 9, the external serial port interface 7 and the external power port 9 are connected to corresponding serial ports of the processor 2 and corresponding power sources through connectors, so as to communicate with corresponding serial devices, supply power to external devices or connect corresponding external power sources to the circuit.

Referring to fig. 8, the SPISRAM circuit 8 is composed of an SRAM and a capacitor C14, the capacitor C14 is a filter capacitor, the SRAM is connected to the processor 2 through an SPI port, and communicates with the processor 2 through an SPI mode, thereby expanding a storage space of the processor 2.

Referring to fig. 10, the debug interface 10 is composed of a connector and a resistor R17, and the SWD debug port of the chip is connected for program debugging.

Referring to fig. 11, the power indicator 11, the resistor R12, the diode D5, the resistor R13, the diode D6, the resistor R14, and the diode D7 indicate whether the corresponding power source is working normally for the power indicator 11.

Referring to fig. 12, the test lamp 12 is used to test whether the circuit can work normally after the circuit is soldered.

The working principle is as follows: the power supply circuit 1 supplies power for the whole circuit, the TVS tubes D1 and D2 are used for preventing the circuit from being damaged by surge current, the DB157S is a rectifier bridge, the positive and negative electrodes can be omitted when the power supply is connected into the circuit, the circuit is prevented from being damaged by human factors, the piezoresistor R1 further absorbs the surge current in the circuit, the circuit is protected, the 4G circuit 3 is communicated with the processor 2 through a serial port, the transmission of body temperature data is completed, and the interaction of the data is completed.

In summary, the following steps: this be used for kindergarten's body temperature rifle communication interaction circuit, power supply circuit 1 supplies power for whole circuit, and utilize TVS pipe D1 and D2 to make the circuit avoid surge current's damage, DB157S rectifier bridge can not divide positive negative pole when making power access circuit, make the circuit avoid the circuit damage that the human factor arouses, piezo-resistor R1 further absorbs surge current in the circuit, the protection circuit, 4G circuit 3 carries out intercommunication through serial ports and treater 2, accomplish the transmission of body temperature data, accomplish the interaction of data.

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 those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be used for mutual circuit of kindergarten's body temperature rifle communication, includes power supply circuit (1), treater (2), 4G circuit (3), reset circuit (4), crystal oscillator circuit (5), BOOT circuit (6), draws serial ports interface (7) outward, SPISRAM circuit (8), power indicator (11), draws power source interface (9), debugging interface (10) and test lamp (12), its characterized in that outward: pin 1 of an STM32F1 chip U1 in the processor (2) is connected with a power supply circuit (1) after voltage reduction, pin 35 of an STM32F1 chip U1 is connected with a pin 19 of a 4G circuit (3), pin 7 of an STM32F1 chip U1 is connected with a reset circuit (4), pins 3, 4 and 5 of an STM32F1 chip U1 are connected with a crystal oscillator circuit (5), pins 28 and 60 of an STM32F1 chip U1 are connected with pins 3 and 4 of a BOOT circuit (6), pins 16, 17, 29 and 30 of an STM32F1 chip U1 are respectively connected with an external serial interface (7), pins 20, 21, 22 and 23 of an STM32F1 chip U1 are connected with pins 1, 2, 5 and 6 of an SPISRAM circuit (8), pin 46 of an STM32F1 and pin 1 of an STM32F1 are connected with pins of a debugging interface (49), and pin 1 of an STM32F1 is connected with a test lamp pin (3) and pin (5812) of the chip U1);

the capacitor C1, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7 and the capacitor C8 form a filter circuit, and the processor (2) is not influenced by circuit ripples in the using process.

2. The kindergarten body temperature gun communication interaction circuit as claimed in claim 1, wherein the power supply circuit (1) comprises TVS tubes D1 and D2, a rectifier bridge U3, a voltage dependent resistor R1, a self-recovery fuse F1, a capacitor E1, an AMS117 chip U2, and an LT1086-5 chip U4, wherein grounded bidirectional voltage-stabilizing tubes D1 and D2 are respectively connected to corners 1 and 2 of the rectifier bridge U3, a corner 3 of the rectifier bridge U3 is respectively connected to the self-recovery fuse F1 and the voltage dependent resistor R1, a corner 1 and 3 of the AMS117 chip U2 are respectively connected in parallel with a capacitor C3 and a super capacitor C2, a corner 2 and 4 of the AMS117 chip U2 are respectively connected in parallel with a capacitor C2 and a super capacitor C1, and an LT1086-5 chip U4 is respectively connected in parallel with a capacitor E3 and a capacitor E4.

3. The kindergarten thermometer communication interaction circuit as claimed in claim 1, wherein the pin 15 of the wirlessoudle chip U5 of the 4G circuit (3) is connected in series with a resistor R8 and a resistor R10 in parallel with the emitter and base of a triode Q1, the collector of the triode Q1 is connected in series with a led D3 and a resistor R4 VCC5, the pin 9 of the wirlessoudle chip U5 is connected in parallel with a resistor R9 and a resistor R11 with the emitter and base of a triode Q2, the collector of the triode Q2 is connected in series with a led D4 and a resistor R5 VCC5, the led D3 and D4 indicate different states of the 4G circuit (3), and the pins 13 and 14 of the wirlessoudle chip U5 chip are connected with a capacitor C12 and a super capacitor E4 constituting a filter circuit.

4. The kindergarten temperature gun communication interaction circuit according to claim 1, wherein the RESET circuit (4) is composed of a capacitor C13, a resistor R3 and a switch KEY, the resistor R3 connected to ground and the switch KEY are connected in series with a resistor R3 and VCC3.3, the capacitor C13 is used as a filter capacitor to filter out ripples, the resistor R3 is used as a pull-up resistor to pull the level of the RESET pin to logic "1" when the switch is opened, and the RESET pin is connected to logic "0" when the switch is closed, so that the system is RESET.

5. The kindergarten body temperature gun communication interaction circuit as claimed in claim 1, wherein the crystal oscillator circuit (5) is composed of a crystal oscillator Y2, a capacitor C10, a capacitor C11, an SPXO _8M chip Y1 and a capacitor C9, the capacitor C10 and the capacitor C11 are connected to the 1, 2 corners of the crystal oscillator Y2, the capacitor C9, the capacitor C10 and the capacitor C11 are used as filter circuits to ensure the stability of the crystal oscillator Y2, and the crystal oscillator Y2 provides a stable clock for the normal operation of the processor (2).

6. The kindergarten temperature gun communication interaction circuit as claimed in claim 1, wherein the BOOT circuit (6) is composed of 3 x 2 pins, a resistor R6 and a resistor R7, the resistor R6 and the resistor R7 pull up the pin level, and the processor (2) is enabled to BOOT program operation from different addresses through different voltages connected to the socket connectors.