CN211508642U - Infrared induction charger circuit - Google Patents
Infrared induction charger circuit Download PDFInfo
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- CN211508642U CN211508642U CN201921788654.XU CN201921788654U CN211508642U CN 211508642 U CN211508642 U CN 211508642U CN 201921788654 U CN201921788654 U CN 201921788654U CN 211508642 U CN211508642 U CN 211508642U
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Abstract
The utility model discloses an infrared induction charger circuit, including the power VCC, central control module, relay control circuit, human detection module, voltage comparison module, the USB module of charging, power VCC and central control module, relay control circuit, human detection module, voltage comparison module, the USB module of charging is connected respectively, central control module and voltage comparison module, relay control circuit, human detection module, the USB module of charging is connected respectively, this system has increased infrared detection function on ordinary cell-phone charger basis, then stop when detecting not having the user on every side and continuously charge for the cell-phone charger even on supply socket, energy-concerving and environment-protective, unnecessary waste has been reduced.
Description
Technical Field
The utility model relates to an infrared induction charger circuit.
Background
The charger for mobile phone is composed of a stable power supply (mainly a voltage-stabilized power supply, a voltage-stabilized power supply and enough current), and necessary control circuits for constant current, voltage limitation, time limitation and the like. Its main function is to charge the cell phone. At present, when the charger is always plugged into the socket for use, the charger is not required to be connected with the mobile phone and is not pulled out of the socket, and the charger is placed in the socket, which is a common phenomenon in the current society. When the mobile phone charger is plugged into the socket, the mobile phone charger can be powered on when contacting with some objects when not used for charging, so that waste of electricity is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an infrared induction charger circuit.
The utility model discloses a following technical scheme can realize.
The utility model provides a pair of infrared induction charger circuit, including power VCC, central control module, relay control circuit, human detection module, voltage comparison module, USB module of charging, the power VCC charges the module with central control module, relay control circuit, human detection module, voltage comparison module, USB and is connected respectively, and central control module charges the module with voltage comparison module, relay control circuit, human detection module, USB and is connected respectively.
The central control module comprises a single-chip microcomputer U2, a crystal oscillator Y1, capacitors C1-C3, a resistor R2, a resistor R3, a diode D1 and a tact switch S2, wherein a pin 18 and a pin 19 of the single-chip microcomputer U2 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with one end of a capacitor C2 and one end of a capacitor C3, the other end of the capacitor C2 and the other end of the capacitor C3 are respectively grounded, a pin 9 of the single-chip microcomputer U2 is connected with one end of a resistor R3 and one end of a tact switch S2, the other end of the resistor R3 is connected with a cathode of a diode D1, an anode of the diode D1 is connected with one end of a resistor R2, the other end of the resistor R2 is respectively connected.
The voltage comparison module comprises a voltage comparator U1 and an adjustable resistor W1, wherein a pin 1 of the voltage comparator U1 is connected with a pin 2 of the single chip microcomputer U2, a pin 4 of the voltage comparator U1 is connected with a binding post of the adjustable resistor W1, another binding post of the adjustable resistor W1 is connected with a power supply VCC, a pin 3 of the voltage comparator U1 is connected with an active end of the adjustable resistor W1, and a pin 8 of the voltage comparator W1 is connected with the power supply VCC.
The USB charging module comprises a USB data interface, a single-pole double-throw switch S1 and a resistor R1, the single-pole double-throw switch S1 is installed on the USB data line interface, a binding post at one end of the single-pole double-throw switch S1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with a power supply VCC, and a binding post at the other end of the single-pole double-throw switch S1 is connected with a pin 2 of a voltage comparator U1.
The human body detection module is an infrared detection chip J1, wherein 1 pin of the infrared detection chip J1 is grounded, 2 pins of the infrared detection chip J1 are connected with 1 pin of a single chip microcomputer U2, and 3 pins of the infrared detection chip J1 are connected with a power supply VCC.
The relay control module comprises a relay K1, a triode Q1, a resistor R4 and a charger power supply J2, the base of a triode Q1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with a pin 21 of a singlechip U2, the collector of a triode Q1 is grounded, the emitter of a triode Q1 is connected with one end of a coil of a relay K1, the other end of the coil of the relay K1 is connected with a power supply VCC, a common contact of the relay K1 is connected with a pin 1 of the charger power supply J2, and a pin 2 of the charger power supply J2 is connected with a normally open contact of the.
The model of the single chip microcomputer U2 is STC89C52, the model of the voltage comparator U1 is LM393, the model of the infrared detection chip J1 is HC-SR501, and the model of the triode Q1 is 8550.
The beneficial effects of the utility model reside in that: the system is additionally provided with an infrared detection function on the basis of a common mobile phone charger, and stops continuously charging the mobile phone charger connected with the power socket when no user is detected around, so that the system is energy-saving and environment-friendly, and reduces unnecessary waste.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the infrared induction charger circuit comprises a power supply VCC, a central control module, a relay control circuit, a human body detection module, a voltage comparison module and a USB charging module, wherein the power supply VCC is respectively connected with the central control module, the relay control circuit, the human body detection module, the voltage comparison module and the USB charging module, and the central control module is respectively connected with the voltage comparison module, the relay control circuit, the human body detection module and the USB charging module.
The central control module comprises a single-chip microcomputer U2, a crystal oscillator Y1, capacitors C1-C3, a resistor R2, a resistor R3, a diode D1 and a tact switch S2, wherein a pin 18 and a pin 19 of the single-chip microcomputer U2 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with one end of a capacitor C2 and one end of a capacitor C3, the other end of the capacitor C2 and the other end of the capacitor C3 are respectively grounded, a pin 9 of the single-chip microcomputer U2 is connected with one end of a resistor R3 and one end of a tact switch S2, the other end of the resistor R3 is connected with a cathode of a diode D1, an anode of the diode D1 is connected with one end of a resistor R2, the other end of the resistor R2 is respectively connected.
The voltage comparison module comprises a voltage comparator U1 and an adjustable resistor W1, wherein a pin 1 of the voltage comparator U1 is connected with a pin 2 of the single chip microcomputer U2, a pin 4 of the voltage comparator U1 is connected with a binding post of the adjustable resistor W1, another binding post of the adjustable resistor W1 is connected with a power supply VCC, a pin 3 of the voltage comparator U1 is connected with an active end of the adjustable resistor W1, and a pin 8 of the voltage comparator W1 is connected with the power supply VCC.
The USB charging module comprises a USB data interface, a single-pole double-throw switch S1 and a resistor R1, the single-pole double-throw switch S1 is installed on the USB data line interface, a binding post at one end of the single-pole double-throw switch S1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with a power supply VCC, and a binding post at the other end of the single-pole double-throw switch S1 is connected with a pin 2 of a voltage comparator U1.
The human body detection module is an infrared detection chip J1, wherein 1 pin of the infrared detection chip J1 is grounded, 2 pins of the infrared detection chip J1 are connected with 1 pin of a single chip microcomputer U2, and 3 pins of the infrared detection chip J1 are connected with a power supply VCC.
The relay control module comprises a relay K1, a triode Q1, a resistor R4, a charger power supply J2, a base electrode of a triode Q1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with a pin 21 of a single chip microcomputer U2, a collector electrode of a triode Q1 is grounded, an emitter electrode of a triode Q1 is connected with one end of a coil of a relay K1, the other end of the coil of the relay K1 is connected with a power supply VCC, a common contact of the relay K1 is connected with a pin 1 of the charger power supply J2, and a pin 2 of the charger power supply J2 is connected with.
The model of the single chip microcomputer U2 is STC89C52, the model of the voltage comparator U1 is LM393, the model of the infrared detection chip J1 is HC-SR501, and the model of the triode Q1 is 8550.
The working principle of the system is as follows: when the system works, a single-pole double-throw switch S1 is installed on a USB data line of the charger, when a switch S1 is closed (a USB charging line is connected with charging equipment), a resistor R1 is conducted, and the input voltage of a pin 2 of a voltage comparator U1 is compared with the voltage of a pin 3 of the voltage comparator U1 (the size of the resistor is adjusted through an adjustable resistor W1); if the voltage of the pin 2 of the voltage comparator is greater than the pin 3, a TTL logic low level is output at the pin 1, the pin 2P 11 of the single chip microcomputer U2 receives the signal, and the single chip microcomputer does not receive the signal of the infrared sensing module J1, so that whether a human body exists in an accessory is not sensed when the charger performs USB charging, and the charging state is kept; on the contrary, if the switch S1 is not closed, pin 1 of the voltage comparator U1 outputs a TTL logic high level, the single chip microcomputer U2 further receives a signal of the infrared sensing module J1, and if a human body exists in the charger accessory, pin 2 of the infrared sensing module J1 outputs a TTL logic high level to be sent to pin 1 of the single chip microcomputer U2, the single chip microcomputer outputs a TTL logic low level at pin 21, the triode Q1 is turned on, the coil of the relay K1 is energized, the normally open contact of the relay K1 is closed, the power supply of the charger is turned on, and the charger enters a state to be charged; otherwise the charger is in a power-off state.
Claims (6)
1. An infrared induction charger circuit, its characterized in that: the intelligent charging device comprises a power supply VCC, a central control module, a relay control circuit, a human body detection module, a voltage comparison module and a USB charging module, wherein the power supply VCC is respectively connected with the central control module, the relay control circuit, the human body detection module, the voltage comparison module and the USB charging module, and the central control module is respectively connected with the voltage comparison module, the relay control circuit, the human body detection module and the USB charging module.
2. The infrared induction charger circuit of claim 1, wherein: the central control module comprises a single-chip microcomputer U2, a crystal oscillator Y1, capacitors C1-C3, a resistor R2, a resistor R3, a diode D1 and a tact switch S2, wherein a pin 18 and a pin 19 of the single-chip microcomputer U2 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with one end of a capacitor C2 and one end of a capacitor C3, the other end of the capacitor C2 and the other end of the capacitor C3 are respectively grounded, a pin 9 of the single-chip microcomputer U2 is connected with one end of a resistor R3 and one end of a tact switch S2, the other end of the resistor R3 is connected with a cathode of a diode D1, an anode of the diode D1 is connected with one end of a resistor R2, the other end of the resistor R2 is respectively connected.
3. The infrared induction charger circuit of claim 1, wherein: the voltage comparison module comprises a voltage comparator U1 and an adjustable resistor W1, wherein a pin 1 of the voltage comparator U1 is connected with a pin 2 of the single chip microcomputer U2, a pin 4 of the voltage comparator U1 is connected with a binding post of the adjustable resistor W1, another binding post of the adjustable resistor W1 is connected with a power supply VCC, a pin 3 of the voltage comparator U1 is connected with an active end of the adjustable resistor W1, and a pin 8 of the voltage comparator W1 is connected with the power supply VCC.
4. The infrared induction charger circuit of claim 1, wherein: the USB charging module comprises a USB data interface, a single-pole double-throw switch S1 and a resistor R1, the single-pole double-throw switch S1 is installed on the USB data line interface, a binding post at one end of the single-pole double-throw switch S1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with a power supply VCC, and a binding post at the other end of the single-pole double-throw switch S1 is connected with a pin 2 of a voltage comparator U1.
5. The infrared induction charger circuit of claim 1, wherein: the human body detection module is an infrared detection chip J1, wherein 1 pin of the infrared detection chip J1 is grounded, 2 pins of the infrared detection chip J1 are connected with 1 pin of a single chip microcomputer U2, and 3 pins of the infrared detection chip J1 are connected with a power supply VCC.
6. The infrared induction charger circuit of claim 1, wherein: the relay control module comprises a relay K1, a triode Q1, a resistor R4 and a charger power supply J2, the base of a triode Q1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with a pin 21 of a singlechip U2, the collector of a triode Q1 is grounded, the emitter of a triode Q1 is connected with one end of a coil of a relay K1, the other end of the coil of the relay K1 is connected with a power supply VCC, a common contact of the relay K1 is connected with a pin 1 of the charger power supply J2, and a pin 2 of the charger power supply J2 is connected with a normally open contact of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921788654.XU CN211508642U (en) | 2019-10-23 | 2019-10-23 | Infrared induction charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921788654.XU CN211508642U (en) | 2019-10-23 | 2019-10-23 | Infrared induction charger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211508642U true CN211508642U (en) | 2020-09-15 |
Family
ID=72407288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921788654.XU Expired - Fee Related CN211508642U (en) | 2019-10-23 | 2019-10-23 | Infrared induction charger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211508642U (en) |
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2019
- 2019-10-23 CN CN201921788654.XU patent/CN211508642U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |