Working circuit for inflator pump

Abstract

The utility model relates to a working circuit for an inflator pump. Comprising a main control circuit, a key circuit, a display circuit, an air pump output circuit, a light circuit, a power supply circuit, a voltage control circuit and a USB (Universal Serial Bus) charging and discharging circuit, wherein the main control circuit is provided with a singlechip for signal processing; the display circuit is provided with an LED (Light Emitting Diode) driving chip and can display power supply information of the air pump; a tire pressure detection circuit; and a voltage detection circuit. The whole circuit is simple in structure, low in setting cost and simple to operate; the functions of battery electric quantity detection, tire pressure detection, light color change and the like can be achieved through the main control circuit, and meanwhile the arranged display circuit can feed back the corresponding electric quantity and various information related to the inflator pump.

Description

Technical Field

[0001] The utility model belongs to the field of air pumps, and in particular relates to a working circuit for an air pump. Background Art

[0002] Air pumps are also called air pumps or air pumps. Existing air pumps usually achieve air extraction or inflation through the operation of a motor. Existing air pumps are limited to their simple working circuits, and can achieve relatively few functions. The corresponding product types are single, and the operator experience is poor. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art, thereby providing a working circuit for an air pump.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A working circuit for an air pump, comprising a main control circuit, a key circuit, a display circuit, an air pump output circuit, a lighting circuit, a power supply circuit, a voltage control circuit and a USB charging and discharging circuit, characterized in that: the main control circuit is composed of a single-chip microcomputer and a capacitor twelve, wherein the single-chip microcomputer pin 1 and one end of the capacitor twelve are connected to a network label VCC, the single-chip microcomputer pin 2 is connected to a network label MOTOR, the single-chip microcomputer pin 3 is connected to a network label key234, the single-chip microcomputer pin 4 is connected to a network label USB, the single-chip microcomputer pin 5 is connected to a network label key15, the single-chip microcomputer pin 6 is connected to a network label STB, the single-chip microcomputer pin 7 is connected to a network label CLK, the single-chip microcomputer pin 8 is connected to a network label DIO, the single-chip microcomputer pin 9 is connected to a network label BATT_V, the single-chip microcomputer pin 10 is connected to a network label WHITE, the single-chip microcomputer pin 11 is connected to a network label RGB, the single-chip microcomputer pin 12 is connected to a network label G1, and the single-chip microcomputer pin 1 Pin 3 is connected to network label S1, pin 14 of the single-chip microcomputer is connected to network label P1, pin 15 of the single-chip microcomputer is connected to network label O1, pin 16 of the single-chip microcomputer and the other end of capacitor 12 are grounded; the button circuit is composed of button 1, button 2, button 3, button 4, button 5, resistor 21, resistor 23, resistor 28, resistor 29, and resistor 32, among which, one end of button 1, one end of resistor 23, and one end of resistor 21 are connected to network label key15, one end of button 2 is connected to the other end of resistor 21, one end of button 3, one end of resistor 29, one end of resistor 32, and one end of resistor 28 are connected to network label key234, one end of button 4 is connected to the other end of resistor 29, one end of button 5 is connected to the other end of resistor 28, the other end of resistor 23, and the other end of resistor 32 are connected to network label VCC, and the other ends of button 1, button 2, button 3, button 4, and button 5 are grounded respectively;The display circuit is composed of an LED driver chip and a three-digit display tube, wherein the LED driver chip pin 1 is connected to the network labeled DIO, the LED driver chip pin 2 is connected to the network labeled CLK, the LED driver chip pin 3 is connected to the network labeled STB, the LED driver chip pin 4 is connected to the network labeled key234, the LED driver chip pin 6 is connected to the network labeled VDD, the LED driver chip pin 7 is connected to the three-digit display tube pin 7, the LED driver chip pin 8 is connected to the three-digit display tube pin 8, the LED driver chip pin 9 is connected to the three-digit display tube pin 9, the LED driver chip pin 10 is connected to the three-digit display tube pin 10, the LED driver chip pin 11 is connected to the three-digit display tube pin 11, L ED driver chip pin 12 is connected to the 12th pin of the three-digit display tube, LED driver chip pin 13 is connected to the 15th pin of the three-digit display tube, LED driver chip pin 14 is connected to the 14th pin of the three-digit display tube, LED driver chip pin 15 is connected to the 13th pin of the three-digit display tube, LED driver chip pin 16 is connected to the network label RED, LED driver chip pin 17 is connected to the 16th pin of the three-digit display tube, LED driver chip pin 18 is connected to the 6th pin of the three-digit display tube, LED driver chip pin 19 is connected to the 5th pin of the three-digit display tube, LED driver chip pin 20 is connected to the 4th pin of the three-digit display tube, LED driver chip pin 21 is connected to the 3rd pin of the three-digit display tube, LED driver chip pin 22 is grounded, LED driver Pin 23 of the dynamic chip is connected to pin 2 of the three-digit display tube, and pin 24 of the LED driver chip is connected to pin 1 of the three-digit display tube; the air pump output circuit is composed of an air pump, capacitor 2, diode 2, MOS tube 4, resistor 7, and resistor 8, wherein the positive electrode of the air pump, the negative electrode of diode 2, and one end of capacitor 2 are connected to the working voltage +11V, the negative electrode of the air pump, the positive electrode of diode 2, and the other end of capacitor 2 are connected to the drain of MOS tube 4, one end of resistor 8 and one end of resistor 7 are connected to the gate of MOS tube 4, the other end of resistor 8 is connected to the network label MOTOR, and the other end of resistor 7 and the source of MOS tube 4 are grounded; the lighting circuit is composed of MOS tube 9, MOS tube 8, resistor 24, resistor 30, resistor 33, and resistor 34 , resistor 39, capacitor 15, a red light, and a white light, wherein one end of resistor 34 and resistor 24 are connected to the working voltage +11V respectively, the other end of resistor 34 is connected to the positive electrode of the white light, the negative electrode of the white light is connected to the drain of MOS tube 9, the gate of MOS tube 9 and one end of resistor 33 are connected to the network label WHITE, the source of MOS tube 9 and the other end of resistor 33 are grounded respectively, the other end of resistor 24 is connected to the positive electrode of the red light, the negative electrode of the red light is connected to the drain of MOS tube 8, one end of capacitor 15, one end of resistor 31, and one end of resistor 39 are connected to the gate of MOS tube 8, the other end of resistor 39 is connected to the network label RED, the other end of capacitor 15, the other end of resistor 30, and the source of MOS tube 8 are grounded;The power supply circuit is composed of a voltage regulator chip, a power supply interface, a battery, a diode 4, a capacitor 10, a resistor 17, a resistor 14, and an electrolytic capacitor 8, wherein the power supply interface 1 pin, the positive electrode of the diode 4, and the positive electrode of the battery are connected to the working voltage +11V, the power supply interface 2 pin is connected to the negative electrode of the battery, the power supply interface 3 pin, the capacitor 11 end, the voltage regulator chip 2 pin, and the negative electrode of the electrolytic capacitor 8 are grounded respectively, the negative electrode of the diode 4 is connected to one end of the resistor 17, the other end of the resistor 17 is connected to one end of the resistor 16, the other end of the resistor 16 and the other end of the capacitor 10 are connected to the voltage regulator chip 1 pin, the voltage regulator chip 3 pin, and the positive electrode of the electrolytic capacitor 8 are output to the network label VCC; the voltage control circuit is composed of a MOS tube 5, a capacitor 6, and a resistor 10, wherein the source of the MOS tube 5 is connected to the network label VCC, the gate of the MOS tube 5 is connected to the resistor 11 end, the drain of the MOS tube 5 and one end of the capacitor 6 are connected to the network label VDD, the other end of the capacitor 6 is grounded, and the other end of the resistor 10 is connected to the network label BATT_V;The USB charging and discharging route consists of USB interface 1, USB interface 2, charging chip, power chip, inductor 1, inductor 2, electrolytic capacitor 1, electrolytic capacitor 2, electrolytic capacitor 3, electrolytic capacitor 4, diode 1, diode 3, dual-base diode, resistor 1, resistor 2, resistor 3, resistor 4, resistor 5, resistor 6, resistor 9, resistor 13, resistor 20, resistor 22, resistor 26, resistor 27, resistor 36, resistor 37, series resistor 1, series resistor 2, capacitor 1, capacitor 3, capacitor 4, capacitor 11, capacitor 13, capacitor 17, MOS tube 1, MOS tube 6, MOS tube 7, and transistor 2, among which resistor 1 at one end, series resistor 1 at one end, series resistor 2 at one end, capacitor 11 at one end, and transistor 2 at one end. Capacitor 4 at one end, resistor 9 at one end, resistor 13 at one end, electrolytic capacitor 4 positive pole, charging chip 2 pin, charging chip 3 pin connected to USB interface 1 pin, USB interface 12 pin connected to resistor 36 at one end, USB interface 13 pin connected to resistor 27 at one end, USB interface 14 pin, resistor 36 at the other end, resistor 27 at the other end, resistor 2 at one end, transistor 2 emitter, capacitor 11 at the other end, electrolytic capacitor 4 negative pole, capacitor 4 at the other end, resistor 9 at the other end, charging chip 6 pin, capacitor 13 at one end, resistor 26 at one end, MOS tube 6 source, MOS tube 7 source, capacitor 3 at one end, electrolytic capacitor 3 negative pole, USB interface 2 at one end, resistor 4 at one end, capacitor 17 at one end, electrolytic capacitor 1 negative pole, electrolytic capacitor 2 The negative electrode, the source electrode of MOS tube 3, and the pin 1 of the power chip are grounded respectively. One end of inductor 2, the other end of series resistor 1, and the other end of series resistor 2 are connected to pin 1 of the charging chip. The other end of inductor 2, the drain electrode of MOS tube 6, and the drain electrode of MOS tube 7 are connected to the positive electrode of diode 3, the negative electrode of diode 3, the other end of capacitor 3, the positive electrode of electrolytic capacitor 3, the other end of resistor 13, pin 3 of the power chip, and the positive electrode of electrolytic capacitor 2 are connected to the working voltage +11V. Pin 4 of the charging chip is connected to the other end of capacitor 13. Pin 5 of the charging chip is connected to one end of resistor 35, the other end of resistor 26, the gate electrode of MOS tube 6, and the gate electrode of MOS tube 7 are connected to the other end of resistor 35. The other end of resistor 1 and the other end of resistor 2 are connected to the base electrode of transistor 2. The negative electrode of diode 1 and the base electrode of the double-base diode Electrode 1 is connected to the collector of transistor 2, base 2 of the double-base diode is connected to one end of resistor 3, emitter of the double-base diode and one end of resistor 22 are connected to network label USB, resistor 22 is connected to working voltage 5V, the other end of resistor 3 and one end of resistor 6 are connected to pin 5 of USB interface 2, the positive electrode of diode 1 and drain of MOS tube 3 are connected to pin 5 of power chip, the gate of MOS tube 3 is connected to the other end of resistor 6, the other end of resistor 4 and one end of resistor 5 are connected to pin 4 of power chip, the other end of resistor 5, the other end of capacitor 17, the positive electrode of electrolytic capacitor 1, and one end of inductor 1 are connected to pin 4 of USB interface 2, pin 6 of power chip is connected to one end of resistor 21, the other end of resistor 20 is connected to one end of capacitor 1, the other end of capacitor 1 and the other end of inductor 1 are connected to pin 2 of power chip. ;

[0006] Furthermore, it also includes a tire pressure detection circuit, which consists of a sensor interface, a capacitor nine, a resistor fourteen, a resistor fifteen, a resistor eighteen, a resistor nineteen, a resistor twenty-five, and a resistor thirty-seven, wherein one end of resistor thirty-seven and one end of resistor twenty-five are connected to pin 1 of the sensor interface, the other end of resistor twenty-five and one end of resistor nineteen are grounded respectively, the other end of resistor thirty-seven is connected to network label G1, the other end of resistor nineteen and one end of resistor eighteen are connected to network label P1, the other end of resistor eighteen and one end of capacitor nine are connected to pin 2 of the sensor interface, one end of resistor fourteen and the other end of capacitor nine are connected to pin 4 of the sensor interface, the other end of resistor fourteen is connected to network label S1, one end of resistor fifteen is connected to network label S1, and the other end of resistor fifteen is connected to network label O1.

[0007] Furthermore, it also includes a voltage detection circuit, which consists of a resistor 11, a resistor 12, and a capacitor 5, wherein one end of the resistor 11 is connected to the working voltage +11V, the other end of the resistor 11, one end of the resistor 12, and one end of the capacitor 5 are connected to a network labeled BATT_V, and the other end of the resistor 12 and the other end of the capacitor 5 are grounded respectively.

[0008] Furthermore, the model of the single chip microcomputer is 79F123.

[0009] Furthermore, the model of the voltage stabilizing chip is ME6210.

[0010] Furthermore, the model of the charging chip is CN3300.

[0011] Furthermore, the model of the power chip is 2208A.

[0012] Furthermore, the model of the LED driver chip is Aip1688.

[0013] Compared with the prior art, the utility model has the following advantages and effects: the entire circuit structure is simple, the setting cost is low, and the operation is simple; the main control circuit can realize functions such as battery power detection, tire pressure detection, and changing light color, and the display circuit can feedback the corresponding power and various information related to the air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a connection diagram of the power supply circuit of an embodiment of the utility model.

[0015] Figure 2 Schematic diagram of the connection of the main control circuit of the embodiment.

[0016] Figure 3 Schematic diagram of the connection of the key circuit of the embodiment.

[0017] Figure 4 Schematic diagram of the connection of the air pump output circuit of the embodiment.

[0018] Figure 5 Schematic diagram of the connection of the lighting circuit of the embodiment.

[0019] Figure 6 FIG. 4 is a connection diagram of a voltage detection circuit according to an embodiment of the present invention.

[0020] Figure 7 The following is a schematic diagram showing the connection of a circuit for an embodiment.

[0021] Figure 8 Schematic diagram of the connection of the voltage control circuit of the embodiment.

[0022] Fig. 9 Schematic diagram of the connection of the USB charging and discharging circuit of the embodiment.

[0023] Fig.10 Schematic diagram of the connection of the tire pressure detection circuit of the embodiment.

[0024] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Example

[0027] like Figure 1-Figure 10 As shown, this embodiment is composed of a main control circuit, a button circuit, a display circuit, an air pump A output circuit, a lighting circuit, a power supply circuit, a voltage control circuit, a USB charging and discharging circuit, a tire pressure detection circuit and a voltage detection circuit.

[0028] like Figure 1As shown, the power supply circuit is composed of a voltage regulator chip U4, a power interface DC1, a battery BATT1, a diode D4, a capacitor C10, a resistor R17, a resistor R14, and an electrolytic capacitor EC8. Specifically, the 1st pin of the power interface DC1, the positive pole of the diode D4, and the positive pole of the battery BATT1 are connected to the working voltage +11V, the 2nd pin of the power interface DC1 is connected to the negative pole of the battery BATT1, the 3rd pin of the power interface DC1, one end of the capacitor C10, the 2nd pin of the voltage regulator chip U4, and the negative pole of the electrolytic capacitor EC8 are grounded respectively, the negative pole of the diode D4 is connected to one end of the resistor R17, the other end of the resistor R17 is connected to one end of the resistor R10, the other end of the resistor R10, and the other end of the capacitor C10 are connected to the 1st pin of the voltage regulator chip U4, and the 3rd pin of the voltage regulator chip U4 and the positive pole of the electrolytic capacitor EC8 are output to the network label VCC. The power circuit is connected to the power interface DC1 of the mains voltage and provides the power required for the operation of all other working circuits in the air pump A.

[0029] like Figure 2 As shown, the main control circuit is composed of a single-chip microcomputer U2 and a capacitor C12. Specifically, pin 1 of the single-chip microcomputer U2 and one end of the capacitor C12 are connected to the network label VCC, pin 2 of the single-chip microcomputer U2 is connected to the network label MOTOR, pin 3 of the single-chip microcomputer U2 is connected to the network label key234, pin 4 of the single-chip microcomputer U2 is connected to the network label USB, pin 5 of the single-chip microcomputer U2 is connected to the network label key15, pin 6 of the single-chip microcomputer U2 is connected to the network label STB, pin 7 of the single-chip microcomputer U2 is connected to the network label CLK, pin 8 of the single-chip microcomputer U2 is connected to the network label DIO, pin 9 of the single-chip microcomputer U2 is connected to the network label BATT_V, pin 10 of the single-chip microcomputer U2 is connected to the network label WHITE, pin 11 of the single-chip microcomputer U2 is connected to the network label RGB, pin 12 of the single-chip microcomputer U2 is connected to the network label G1, pin 13 of the single-chip microcomputer U2 is connected to the network label S1, pin 14 of the single-chip microcomputer U2 is connected to the network label P1, and pin 15 of the single-chip microcomputer U2 is connected to the network label Pin 15 is connected to network label O1, and pin 16 of single-chip microcomputer U2 and the other end of capacitor C12 are grounded. In this embodiment, the model of single-chip microcomputer U2 is 79F123, which has two built-in 8-bit timers and one 16-bit timer, 5-channel PWM modules with complementary outputs, 13-channel 12-bit high-precision ADC, built-in high-precision 1.2V reference voltage, built-in 24bit / 12bit hardware divider module, and 8 voltage LVD modules, which can effectively meet the needs of the working circuit. The main control circuit is used to receive and process electronic signals and output the results to each circuit.

[0030] like Figure 3As shown, the key circuit consists of key 1 S1, key 2 S2, key 3 S3, key 4 S4, key 5 S5, resistor 21 R21, resistor 23 R23, resistor 28 R28, resistor 29 R29, and resistor 32 R32. Specifically, one end of key 1 S1, one end of resistor 23 R23, and one end of resistor 21 R21 are connected to network label key15, one end of key 2 S2 is connected to the other end of resistor 21 R21, one end of key 3 S3, one end of resistor 29 R29, one end of resistor 32 R32, and one end of resistor 28 R28 are connected to network label key234, one end of key 4 S4 is connected to the other end of resistor 29 R29, one end of key 5 S5 is connected to the other end of resistor 28 R28, the other end of resistor 23 R23, and the other end of resistor 32 R32 are connected to network label VCC, and the other end of key 1 S1, the other end of key 2 S2, the other end of key 3 S3, the other end of key 4 S4, and the other end of key 5 S5 are grounded respectively. The key circuit is provided with a number of keys that can issue instructions to the main control circuit, and these keys can issue a series of instructions such as start, close, and set to other circuits.

[0031] like Figure 4 As shown, the output circuit of air pump A is composed of air pump A, capacitor C2, diode D2, MOS tube Q4, resistor R7, and resistor R8. Specifically, the positive electrode of air pump A, the negative electrode of diode D2, and one end of capacitor C2 are connected to the working voltage +11V, the negative electrode of air pump A, the positive electrode of diode D2, and the other end of capacitor C2 are connected to the drain of MOS tube Q4, one end of resistor R8 and one end of resistor R7 are connected to the gate of MOS tube Q4, the other end of resistor R8 is connected to the network label MOTOR, and the other end of resistor R7 and the source of MOS tube Q4 are grounded. The output circuit of air pump A receives instructions to control the operation of the air pump A connected thereto to inflate.

[0032] like Figure 5As shown, the lighting circuit is composed of MOS tube nine Q9, MOS tube eight Q8, resistor twenty-four R24, resistor thirty R30, resistor thirty-three R33, resistor thirty-four R34, resistor thirty-nine R39, capacitor fifteen C15, red light L3, and white light L2. Specifically, one end of resistor 34 R34 and resistor 24 R24 are connected to the working voltage +11V respectively, the other end of resistor 34 R34 is connected to the positive electrode of white lamp L2, the negative electrode of white lamp L2 is connected to the drain of MOS tube 9 Q9, the gate of MOS tube Q9 and one end of resistor 33 R33 are connected to the network label WHITE, the source of MOS tube Q9 and the other end of resistor 33 R33 are grounded respectively, the other end of resistor 24 R24 is connected to the positive electrode of red light L3, the negative electrode of red light L3 is connected to the drain of MOS tube 8 Q8, one end of capacitor 15 C15, one end of resistor 30 R30, and one end of resistor 39 R39 are connected to the gate of MOS tube 8 Q8, the other end of resistor 39 R39 is connected to the network label RED, the other end of capacitor 15 C15, the other end of resistor 30 R30, and the source of MOS tube 8 Q8 are grounded. The lighting circuit changes the working state of the red light L3 or the white light L2 by receiving instructions. The following provides a working mode of a lighting circuit and a key circuit: short press the button corresponding to the preset lighting button in the key circuit once, and the white light L2 will be always on; press the lighting button twice, and the red light L3 will flash continuously; press the lighting button three times, and the red light L3 will flash intermittently; press the lighting button four times, all lights will be turned off, and the cycle continues.

[0033] like Figure 6 As shown, the voltage detection circuit is composed of a resistor 11 R11, a resistor 12 R12, and a capacitor 5 C5. Specifically, one end of the resistor 11 R11 is connected to the working voltage +11V, the other end of the resistor 11 R11, one end of the resistor 12 R12, and one end of the capacitor 5 C5 are connected to the network label BATT_V, and the other end of the resistor 12 R12 and the other end of the capacitor 5 C5 are grounded respectively.

[0034] like Figure 7As shown, the display circuit is composed of LED driver chip U3 and three-digit display tube LEM1. Specifically, pin 1 of LED driver chip U3 is connected to network label DIO, pin 2 of LED driver chip U3 is connected to network label CLK, pin 3 of LED driver chip U3 is connected to network label STB, pin 4 of LED driver chip U3 is connected to network label key234, pin 6 of LED driver chip U3 is connected to network label VDD, pin 7 of LED driver chip U3 is connected to pin 7 of three-digit display tube LEM1, pin 8 of LED driver chip U3 is connected to pin 8 of three-digit display tube LEM1, pin 9 of LED driver chip U3 is connected to pin 9 of three-digit display tube LEM1, pin 10 of LED driver chip U3 is connected to pin 10 of three-digit display tube LEM1, pin 11 of LED driver chip U3 is connected to pin 11 of three-digit display tube LEM1, pin 12 of LED driver chip U3 is connected to pin 12 of three-digit display tube LEM1, pin 13 of LED driver chip U3 is connected to pin 15 of three-digit display tube LEM1, and pin 14 of LED driver chip U3 is connected to pin 15 of three-digit display tube LEM1 14 feet, LED driver chip U315 feet connected to three-digit display tube LEM1 13 feet, LED driver chip U3 16 feet connected to network label RED, LED driver chip U3 17 feet connected to three-digit display tube LEM1 16 feet, LED driver chip U3 18 feet connected to three-digit display tube LEM1 6 feet, LED driver chip U3 19 feet connected to three-digit display tube LEM1 5 feet, LED driver chip U3 20 feet connected to three-digit display tube LEM1 4 feet, LED driver chip U3 21 feet connected to three-digit display tube LEM1 3 feet, LED driver chip U3 22 feet grounded, LED driver chip U3 23 feet connected to three-digit display tube LEM1 2 feet, LED driver chip U3 24 feet connected to three-digit display tube LEM1 1 feet. The display circuit feeds back the corresponding content signals received through the three-digit display tube LEM1, including the power of the air pump A, the light color, and various settings of the air pump A.

[0035] like Figure 8 As shown, the voltage control circuit is composed of a MOS tube Q5, a capacitor C6, and a resistor R10. Specifically, the source of the MOS tube Q5 is connected to the network labeled VCC, the gate of the MOS tube Q5 is connected to the end of the resistor R11, the drain of the MOS tube Q5 and one end of the capacitor C6 are connected to the network labeled VDD, the other end of the capacitor C6 is grounded, and the other end of the resistor R10 is connected to the network labeled BATT_V.

[0036] like Fig. 9As shown, the USB charging and discharging route includes USB interface 1 USB1, USB interface 2 USB2, charging chip U5, power chip U1, inductor 1 LH1, inductor 2 LH2, electrolytic capacitor 1 EC1, electrolytic capacitor 2 EC2, electrolytic capacitor 3 EC3, electrolytic capacitor 4 EC4, diode 1 D1, diode 3 D3, double-base diode Q1, resistor 1 R1, resistor 2 R2, resistor 3 R3, resistor 4 R4, resistor 5 R5, resistor 6 R6, resistor 9 R9, resistor 13 R13, resistor 20 R20, resistor 22 R22, resistor 26 R26, resistor 27 R27, resistor 36 R36, resistor 37 R37, series resistor 1 RS1, series resistor 2 RS2, capacitor 1 C1, capacitor 3 C3, capacitor 4 C4, capacitor 11 C11, capacitor 13 C13, capacitor 17 C17, MOS tube 3 Q3, MOS tube 6 Q6, MOS tube 7 Q7, and triode 2 Q2. Specifically, one end of resistor R1, one end of series resistor RS1, one end of series resistor R21, one end of capacitor C11, one end of capacitor C4, one end of resistor R9, one end of resistor R13, positive electrode of electrolytic capacitor EC4, 2nd pin of charging chip U5, 3rd pin of charging chip U5 are connected to 1st pin of USB interface USB1, 2nd pin of USB interface USB1 is connected to one end of resistor R36, 3rd pin of USB interface USB1 is connected to one end of resistor R27, 4th pin of USB interface USB1, the other end of resistor R36, the other end of resistor R27, the end of resistor R21, the emitter of transistor Q2, the other end of capacitor C11, the negative electrode of electrolytic capacitor EC4, the other end of capacitor C4, the other end of resistor R9, and charging chip U5 Pin 6, one end of capacitor C13, one end of resistor R26, source of MOS tube Q6, source of MOS tube Q7, one end of capacitor C3, negative electrode of electrolytic capacitor EC3, pin 1 of USB interface USB2, one end of resistor R4, one end of capacitor C17, negative electrode of electrolytic capacitor EC1, negative electrode of electrolytic capacitor EC2, source of MOS tube Q3, pin 1 of power chip U1 are grounded respectively, one end of inductor LH2, the other end of series resistor RS1, the other end of series resistor RS2 are connected to pin 1 of charging chip U5, the other end of inductor LH2, drain of MOS tube Q6, drain of MOS tube Q7 are connected to positive electrode of diode D3, negative electrode of diode D3, the other end of capacitor C3, positive electrode of electrolytic capacitor EC3, the other end of resistor R13, power chip U1 3-pin, the positive pole of electrolytic capacitor EC2 is connected to the working voltage +11V, the 4-pin of charging chip U5 is connected to the other end of capacitor C13, the 5-pin of charging chip U5 is connected to the first end of resistor R35, the other end of resistor R26, the gate of MOS tube Q6, the gate of MOS tube Q7 are connected to the other end of resistor R35, the other end of resistor R1, the other end of resistor R2 is connected to the base of transistor Q2,The cathode of diode D1 and base 1 of double-base diode Q1 are connected to the collector of transistor Q2, base 2 of double-base diode Q1 is connected to one end of resistor R3, emitter of double-base diode Q1 and one end of resistor R22 are connected to network label USB, resistor R22 is connected to working voltage 5V, the other end of resistor R3 and one end of resistor R6 are connected to pin 5 of USB interface USB2, the anode of diode D1 and drain of MOS tube Q3 are connected to pin 5 of power chip U1, the gate of MOS tube Q3 is connected to the other end of resistor R6, the other end of resistor R4 and one end of resistor R5 are connected to pin 4 of power chip U1, the other end of resistor R5 and the other end of capacitor C17, the positive electrode of electrolytic capacitor EC1 and one end of inductor LH1 are connected to pin 4 of USB interface USB2, power chip U1 Pin 6 is connected to one end of resistor R20, the other end of resistor R20 is connected to one end of capacitor C1, the other end of capacitor C1 and the other end of inductor LH1 are connected to pin 2 of power chip U1. The USB charging circuit provides USB charging function and mobile power supply for air pump A, so that air pump A can work with battery BATT1 power supply or output power through USB interface when it is out of city voltage.

[0037] like Fig.10 As shown, the tire pressure detection circuit is composed of a sensor interface CN1, a capacitor C9, a resistor R14, a resistor R15, a resistor R18, a resistor R19, a resistor R25, and a resistor R37. Specifically, one end of the resistor R37 and one end of the resistor R25 are connected to the sensor interface CN11 pin, the other end of the resistor R25 and one end of the resistor R19 are grounded respectively, the other end of the resistor R37 is connected to the network label G1, the other end of the resistor R19 and one end of the resistor R18 are connected to the network label P1, the other end of the resistor R18 and one end of the capacitor C9 are connected to the sensor interface CN12 pin, one end of the resistor R14 and the other end of the capacitor C9 are connected to the sensor interface CN14 pin, the other end of the resistor R14 is connected to the network label S1, one end of the resistor R15 is connected to the network label S1, and the other end of the resistor R15 is connected to the network label O1. The tire pressure detection circuit is connected to the air pressure sensor through the sensor interface CN1 to sense the air pressure in the tire and make corresponding data feedback actions.

[0038] In this embodiment, the specific parameters or models of each electronic component include: the model of the single chip microcomputer U2 is 79F123; the model of the voltage regulator chip U4 is ME6210; the model of the charging chip U5 is CN3300; the model of the power chip U1 is 2208A; the model of the LED driver chip U3 is Aip1688. The parameters and models of each electronic component are only a preferred embodiment of this embodiment, but not only this preferred embodiment.

[0039] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A working circuit for an air pump, comprising a main control circuit, a key circuit, a display circuit, an air pump output circuit, a lighting circuit, a power circuit, a voltage control circuit and a USB charging and discharging circuit, characterized in that: The main control circuit is composed of a single-chip microcomputer and a capacitor twelve, wherein pin 1 of the single-chip microcomputer and one end of the capacitor twelve are connected to the network label VCC, pin 2 of the single-chip microcomputer is connected to the network label MOTOR, pin 3 of the single-chip microcomputer is connected to the network label key234, pin 4 of the single-chip microcomputer is connected to the network label USB, pin 5 of the single-chip microcomputer is connected to the network label key15, pin 6 of the single-chip microcomputer is connected to the network label STB, pin 7 of the single-chip microcomputer is connected to the network label CLK, pin 8 of the single-chip microcomputer is connected to the network label DIO, pin 9 of the single-chip microcomputer is connected to the network label BATT_V, pin 10 of the single-chip microcomputer is connected to the network label WHITE, pin 11 of the single-chip microcomputer is connected to the network label RGB, pin 12 of the single-chip microcomputer is connected to the network label G1, pin 13 of the single-chip microcomputer is connected to the network label S1, pin 14 of the single-chip microcomputer is connected to the network label P1, pin 15 of the single-chip microcomputer is connected to the network label O1, and pin 16 of the single-chip microcomputer and the other end of the capacitor twelve are grounded; The key circuit is composed of key 1, key 2, key 3, key 4, key 5, resistor 21, resistor 23, resistor 28, resistor 29, and resistor 32, wherein one end of key 1, one end of resistor 23, and one end of resistor 21 are connected to network label key15, one end of key 2 is connected to the other end of resistor 21, one end of key 3, one end of resistor 29, one end of resistor 32, and one end of resistor 28 are connected to network label key234, one end of key 4 is connected to the other end of resistor 29, one end of key 5 is connected to the other end of resistor 28, the other end of resistor 23, and the other end of resistor 32 are connected to network label VCC, and the other ends of key 1, key 2, key 3, key 4, and key 5 are grounded respectively; The display circuit is composed of an LED driver chip and a three-digit display tube, wherein pin 1 of the LED driver chip is connected to the network labeled DIO, pin 2 of the LED driver chip is connected to the network labeled CLK, pin 3 of the LED driver chip is connected to the network labeled STB, pin 4 of the LED driver chip is connected to the network labeled key234, pin 6 of the LED driver chip is connected to the network labeled VDD, pin 7 of the LED driver chip is connected to pin 7 of the three-digit display tube, pin 8 of the LED driver chip is connected to pin 8 of the three-digit display tube, pin 9 of the LED driver chip is connected to pin 9 of the three-digit display tube, pin 10 of the LED driver chip is connected to pin 10 of the three-digit display tube, pin 11 of the LED driver chip is connected to pin 11 of the three-digit display tube, and pin 12 of the LED driver chip is connected to pin 12 of the three-digit display tube Pin, LED driver chip pin 13 is connected to pin 15 of the three-digit display tube, LED driver chip pin 14 is connected to pin 14 of the three-digit display tube, LED driver chip pin 15 is connected to pin 13 of the three-digit display tube, LED driver chip pin 16 is connected to network label RED, LED driver chip pin 17 is connected to pin 16 of the three-digit display tube, LED driver chip pin 18 is connected to pin 6 of the three-digit display tube, LED driver chip pin 19 is connected to pin 5 of the three-digit display tube, LED driver chip pin 20 is connected to pin 4 of the three-digit display tube, LED driver chip pin 21 is connected to pin 3 of the three-digit display tube, LED driver chip pin 22 is grounded, LED driver chip pin 23 is connected to pin 2 of the three-digit display tube, LED driver chip pin 24 is connected to pin 1 of the three-digit display tube; The air pump output circuit is composed of an air pump, capacitor 2, diode 2, MOS tube 4, resistor 7, and resistor 8, wherein the positive electrode of the air pump, the negative electrode of diode 2, and one end of capacitor 2 are connected to the working voltage +11V, the negative electrode of the air pump, the positive electrode of diode 2, and the other end of capacitor 2 are connected to the drain of MOS tube 4, one end of resistor 8 and one end of resistor 7 are connected to the gate of MOS tube 4, the other end of resistor 8 is connected to the network label MOTOR, and the other end of resistor 7 and the source of MOS tube 4 are grounded; The lighting circuit is composed of MOS tube 9, MOS tube 8, resistor 24, resistor 30, resistor 33, resistor 34, resistor 39, capacitor 15, red light and white light, wherein one end of resistor 34 and resistor 24 are connected to the working voltage +11V respectively, the other end of resistor 34 is connected to the positive electrode of the white light, the negative electrode of the white light is connected to the drain of MOS tube 9, the gate of MOS tube 9 and one end of resistor 33 are connected to the network label WHITE, the source of MOS tube 9 and the other end of resistor 33 are grounded respectively, the other end of resistor 24 is connected to the positive electrode of the red light, the negative electrode of the red light is connected to the drain of MOS tube 8, one end of capacitor 15, one end of resistor 31 and one end of resistor 39 are connected to the gate of MOS tube 8, the other end of resistor 39 is connected to the network label RED, the other end of capacitor 15, the other end of resistor 30 and the source of MOS tube 8 are grounded; The power supply circuit is composed of a voltage stabilizing chip, a power supply interface, a battery, a diode 4, a capacitor 10, a resistor 17, a resistor 14, and an electrolytic capacitor 8. Among them, pin 1 of the power supply interface, the positive pole of the diode 4, and the positive pole of the battery are connected to the working voltage +11V, pin 2 of the power supply interface is connected to the negative pole of the battery, pin 3 of the power supply interface, the eleventh end of the capacitor, pin 2 of the voltage stabilizing chip, and the negative pole of the electrolytic capacitor 8 are grounded respectively, the negative pole of the diode 4 is connected to one end of the resistor 17, the other end of the resistor 17 is connected to one end of the resistor 16, the other end of the resistor 16 and the other end of the capacitor 10 are connected to pin 1 of the voltage stabilizing chip, and pin 3 of the voltage stabilizing chip and the positive pole of the electrolytic capacitor 8 are output to the network label VCC; The voltage control circuit is composed of MOS tube 5, capacitor 6, and resistor 10, wherein the source of MOS tube 5 is connected to the network label VCC, the gate of MOS tube 5 is connected to the eleventh end of resistor, the drain of MOS tube 5 and one end of capacitor 6 are connected to the network label VDD, the other end of capacitor 6 is grounded, and the other end of resistor 10 is connected to the network label BATT_V; The USB charging and discharging route consists of USB interface 1, USB interface 2, charging chip, power chip, inductor 1, inductor 2, electrolytic capacitor 1, electrolytic capacitor 2, electrolytic capacitor 3, electrolytic capacitor 4, diode 1, diode 3, dual-base diode, resistor 1, resistor 2, resistor 3, resistor 4, resistor 5, resistor 6, resistor 9, resistor 13, resistor 20, resistor 22, resistor 26, resistor 27, resistor 36, resistor 37, series resistor 1, series resistor 2, capacitor 1, capacitor 3, capacitor 4, capacitor 11, capacitor 13, capacitor 17, MOS tube 1, MOS tube 6, MOS tube 7, and transistor 2, among which resistor 1 at one end, series resistor 1 at one end, series resistor 2 at one end, capacitor 11 at one end, and transistor 2 at one end. Capacitor 4 at one end, resistor 9 at one end, resistor 13 at one end, electrolytic capacitor 4 positive pole, charging chip 2 pin, charging chip 3 pin connected to USB interface 1 pin, USB interface 12 pin connected to resistor 36 at one end, USB interface 13 pin connected to resistor 27 at one end, USB interface 14 pin, resistor 36 at the other end, resistor 27 at the other end, resistor 2 at one end, transistor 2 emitter, capacitor 11 at the other end, electrolytic capacitor 4 negative pole, capacitor 4 at the other end, resistor 9 at the other end, charging chip 6 pin, capacitor 13 at one end, resistor 26 at one end, MOS tube 6 source, MOS tube 7 source, capacitor 3 at one end, electrolytic capacitor 3 negative pole, USB interface 2 at one end, resistor 4 at one end, capacitor 17 at one end, electrolytic capacitor 1 negative pole, electrolytic capacitor 2 The negative electrode, the source electrode of MOS tube 3, and the pin 1 of the power chip are grounded respectively. One end of inductor 2, the other end of series resistor 1, and the other end of series resistor 2 are connected to pin 1 of the charging chip. The other end of inductor 2, the drain electrode of MOS tube 6, and the drain electrode of MOS tube 7 are connected to the positive electrode of diode 3, the negative electrode of diode 3, the other end of capacitor 3, the positive electrode of electrolytic capacitor 3, the other end of resistor 13, pin 3 of the power chip, and the positive electrode of electrolytic capacitor 2 are connected to the working voltage +11V. Pin 4 of the charging chip is connected to the other end of capacitor 13. Pin 5 of the charging chip is connected to one end of resistor 35, the other end of resistor 26, the gate electrode of MOS tube 6, and the gate electrode of MOS tube 7 are connected to the other end of resistor 35. The other end of resistor 1 and the other end of resistor 2 are connected to the base electrode of transistor 2. The negative electrode of diode 1 and the base electrode of the double-base diode Pole 1 is connected to the collector of transistor 2, base 2 of the double-base diode is connected to one end of resistor 3, the emitter of the double-base diode and one end of resistor 22 are connected to the network label USB, resistor 22 is connected to the working voltage 5V, the other end of resistor 3 and one end of resistor 6 are connected to pin 5 of USB interface 2, the positive pole of diode 1 and the drain of MOS tube 3 are connected to pin 5 of the power chip, the gate of MOS tube 3 is connected to the other end of resistor 6, the other end of resistor 4 and one end of resistor 5 are connected to pin 4 of the power chip, the other end of resistor 5, the other end of capacitor 17, the positive pole of electrolytic capacitor 1, and one end of inductor 1 are connected to pin 4 of USB interface 2, pin 6 of the power chip is connected to one end of resistor 21, the other end of resistor 20 is connected to one end of capacitor 1, the other end of capacitor 1 and the other end of inductor 1 are connected to pin 2 of the power chip.

2. The working circuit for the air pump according to claim 1, characterized in that: It also includes a tire pressure detection circuit, which consists of a sensor interface, a capacitor nine, a resistor fourteen, a resistor fifteen, a resistor eighteen, a resistor nineteen, a resistor twenty-five, and a resistor thirty-seven, wherein one end of resistor thirty-seven and one end of resistor twenty-five are connected to pin 1 of the sensor interface, the other end of resistor twenty-five and one end of resistor nineteen are grounded respectively, the other end of resistor thirty-seven is connected to network label G1, the other end of resistor nineteen and one end of resistor eighteen are connected to network label P1, the other end of resistor eighteen and one end of capacitor nine are connected to pin 2 of the sensor interface, one end of resistor fourteen and the other end of capacitor nine are connected to pin 4 of the sensor interface, the other end of resistor fourteen is connected to network label S1, one end of resistor fifteen is connected to network label S1, and the other end of resistor fifteen is connected to network label O1.

3. The working circuit for the air pump according to claim 1, characterized in that: It also includes a voltage detection circuit, which consists of a resistor 11, a resistor 12, and a capacitor 5, wherein one end of the resistor 11 is connected to the working voltage +11V, the other end of the resistor 11, one end of the resistor 12, and one end of the capacitor 5 are connected to a network label BATT_V, and the other end of the resistor 12 and the other end of the capacitor 5 are grounded respectively.

4. The working circuit for an air pump according to any one of claims 1 to 3, characterized in that: The model of the single chip microcomputer is 79F123.

5. The working circuit for an air pump according to any one of claims 1 to 3, characterized in that: The model of the voltage stabilizing chip is ME6210.

6. The working circuit for an air pump according to any one of claims 1 to 3, characterized in that: The model of the charging chip is CN3300.

7. The working circuit for an air pump according to any one of claims 1 to 3, characterized in that: The model of the power chip is 2208A.

8. The working circuit for an air pump according to any one of claims 1 to 3, characterized in that: The model of the LED driver chip is Aip1688.

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