A microphone charging system capable of charging and ID transmission by wireless charging

Abstract

The utility model discloses a microphone charging system can utilize wireless charging and ID transmission, including TX charging cabin circuit and RX end ring wireless charging receiving circuit, in TX charging cabin circuit, USB 5V input charging part: external power supply passes through USBJ1 interface input, and VIN passes through electric capacity C3, and accesses the 2 foot of chip U1, and chip U4 has integrated OVP, the utility model solves the bad experience of charging such as the easy corrosion of metal contact, solves the problem that wireless charging can not complete microphone and sound box ID pairing.

Description

Technical Field

[0001] This utility model relates to the field of wireless charging technology for electronic devices, and in particular to a microphone charging system that can be used for charging and ID transmission via wireless charging. Background Technology

[0002] Current microphones are generally contact-charging microphones, using metal springs for charging. These are prone to oxidation during use, and can produce popping noises during charging. Their waterproof rating is typically only IPX4. USB charging microphones are susceptible to cable detachment due to cable movement, and cable movement can also generate noise. Their waterproof rating is only IPX7. Wireless charging microphones feature a fully enclosed design, offering a higher waterproof rating of IPX8. They also provide less charging interference, physical isolation, and ID recognition. Utility Model Content

[0003] The purpose of this invention is to provide a microphone charging system that can be charged and transmit ID using wireless charging. The aim is to solve the problems of efficient coupling, communication, foreign object detection and over-temperature protection under space constraints. Most importantly, it can also use wireless charging to transmit ID address for easy pairing of microphones and speakers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A microphone charging system that can be charged and transmit ID using wireless charging includes a TX charging case circuit and an RX ring wireless charging receiver circuit. In the TX charging case circuit, the USB 5V input charging section: the external power supply is input through the USBJ1 interface, VIN passes through capacitor C3 and is connected to pin 2 of chip U1, and chip U4 integrates OVP; Coil section: VIN is connected to pin 1 of chip U1 after passing through coil L1 and capacitor C2. Capacitor C2 and coil L1 form a parallel resonance, which converts electrical energy into magnetic field to charge the magnetic field at the other end. VIN is connected to ground through capacitor C1, and capacitor C1 filters out ripple from the input power supply. Wireless charging driver section: Pin 8 of chip U1 is connected to R1 to ground, pin 7 of chip U1 is connected to capacitor C4 and power supply voltage VDD, power supply voltage VDD supplies power to chip U2, resistor R1 is a current sensing resistor, pin 5 of chip U1 is connected to capacitor C6, and pin 5 of chip U1 amplifies the current signal of resistor R1 and outputs it. Wireless charging decoding section: Pin 5 of chip U1 is connected to pin 1 of chip U2 via resistor R2 and capacitor C5, and pin 3 of chip U2 is connected via resistor R3 and capacitor C7. Resistor R2 and capacitor C5 together with resistor R3 and capacitor C7 form a set. After the power supply passes through pin 2 of chip U1, the voltage output VDD from pin 7 of chip U1 is regulated to power chip U2. After chip U2 is powered on, the PWM output from pin 6 of chip U2 is sent to pin 4 of chip U1 to drive the wireless charging coil. The coil detection communication passes through pin 8 of chip U1, and is then output from the OPO of the internal operational amplifier of chip U1 to pins 1 and 3 of chip U2. Chip U2 identifies the data transmitted from RX by comparing the voltage flip time between the two pins. In the RX-end wireless charging receiver circuit, coil L3 is connected to pin 1 of chip U6 via capacitor C23 to ground. Pin 1 of coil L3 is also connected to capacitor C21 to ground, forming a series-parallel resonance between capacitors C21 and C23. Pin 1 of coil L3 is connected to transistor Q1 to ground via capacitor C22. Pin 1 of transistor Q1 is connected to COMC and resistor R15. COMC is connected to an external MCU. Pin 7 of chip U6 is connected to capacitor C19 to output 5V. Pin 5 of chip U6 is connected to 5V. Pin 6 of chip U6 is connected to the CHG signal and then to the external MCU. Pin 8 of chip U6 is connected to capacitor C20 to ground. Capacitor C22 and transistor Q1 are used to change the oscillation frequency of the entire receiving coil, causing a change in the amplitude of the transmission. The command issued by RX is identified by recognizing the change in amplitude.

[0005] Preferably, the chip U1 in the TX charging case circuit is model JDS9311A, and the chip U2 is model JDS9313-6.

[0006] Preferably, the chip U1 in the RX end ring wireless charging receiver circuit is a wireless charging receiver IC JDS9007B.

[0007] Compared with the prior art, this utility model has the following advantages: This utility model solves the problem of poor charging experience caused by easy corrosion of metal contacts; it also solves the problem of wireless charging failing to complete microphone and speaker ID pairing. Attached Figure Description

[0008] Figure 1 This is the circuit diagram for the TX charging case of this utility model; Figure 2 This is a practical RX-end wireless charging receiver circuit for rings. Detailed Implementation

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0010] like Figure 1-2 As shown, a microphone charging system that can be charged and transmit ID using wireless charging includes a TX charging case circuit and an RX ring wireless charging receiver circuit. In the TX charging case circuit, the USB 5V input charging section: the external power supply is input through the USBJ1 interface, VIN passes through capacitor C3 and is connected to pin 2 of chip U1, and chip U4 integrates OVP; Coil section: VIN is connected to pin 1 of chip U1 after passing through coil L1 and capacitor C2. Capacitor C2 and coil L1 form a parallel resonance, which converts electrical energy into magnetic field to charge the magnetic field at the other end. VIN is connected to ground through capacitor C1, and capacitor C1 filters out ripple from the input power supply. Wireless charging driver section: Pin 8 of chip U1 is connected to R1 to ground, pin 7 of chip U1 is connected to capacitor C4 and power supply voltage VDD, power supply voltage VDD supplies power to chip U2, resistor R1 is a current sensing resistor, pin 5 of chip U1 is connected to capacitor C6, and pin 5 of chip U1 amplifies the current signal of resistor R1 and outputs it. Wireless charging decoding section: Pin 5 of chip U1 is connected to pin 1 of chip U2 via resistor R2 and capacitor C5, and pin 3 of chip U2 is connected via resistor R3 and capacitor C7. Resistor R2 and capacitor C5 together with resistor R3 and capacitor C7 form a set. After the power supply passes through pin 2 of chip U1, the voltage output VDD from pin 7 of chip U1 is regulated to power chip U2. After chip U2 is powered on, the PWM output from pin 6 of chip U2 is sent to pin 4 of chip U1 to drive the wireless charging coil. The coil detection communication passes through pin 8 of chip U1, and is then output from the OPO of the internal operational amplifier of chip U1 to pins 1 and 3 of chip U2. Chip U2 identifies the data transmitted from RX by comparing the voltage flip time between the two pins. In the RX-end wireless charging receiver circuit, coil L3 is connected to pin 1 of chip U6 via capacitor C23 to ground. Pin 1 of coil L3 is also connected to capacitor C21 to ground, forming a series-parallel resonance between capacitors C21 and C23. Pin 1 of coil L3 is connected to transistor Q1 to ground via capacitor C22. Pin 1 of transistor Q1 is connected to COMC and resistor R15. COMC is connected to an external MCU. Pin 7 of chip U6 is connected to capacitor C19 to output 5V. Pin 5 of chip U6 is connected to 5V. Pin 6 of chip U6 is connected to the CHG signal and then to the external MCU. Pin 8 of chip U6 is connected to capacitor C20 to ground. Capacitor C22 and transistor Q1 are used to change the oscillation frequency of the entire receiving coil, causing a change in the amplitude of the transmission. The command issued by RX is identified by recognizing the change in amplitude.

[0011] In the TX charging case circuit, chip U1 is model JDS9311A, and chip U2 is model JDS9313-6. In the RX end wireless charging receiver circuit, chip U1 is model JDS9007B wireless charging receiver IC.

[0012] After USB J1 is connected to power, U2 activates PWM, and chip U1 drives the wireless charging coil. During coil operation, if no charging code is received or no load is detected within 20 seconds, the IC stops charging. If a load and charging code are detected, the wireless charger will continue operating and repeatedly identify the charging code. The external MCU detects the CHG signal on pin 6 of U1. When CHG is low, the MCU sends communication codes such as the microphone ID via COMC. After the transmitter recognizes the communication code, pairing is completed, and charging of the microphone continues until fully charged.

[0013] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A microphone charging system capable of wireless charging and ID transmission, characterized in that, Including the TX charging case circuit and the RX end ring wireless charging receiver circuit; In the TX charging case circuit, the USB 5V input charging section: the external power supply is input through the USBJ1 interface, VIN passes through capacitor C3 and is connected to pin 2 of chip U1, and chip U4 integrates OVP; Coil section: VIN is connected to pin 1 of chip U1 after passing through coil L1 and capacitor C2. Capacitor C2 and coil L1 form a parallel resonance, which converts electrical energy into magnetic field to charge the magnetic field at the other end. VIN is connected to ground through capacitor C1, and capacitor C1 filters out ripple from the input power supply. Wireless charging driver section: Pin 8 of chip U1 is connected to R1 to ground, pin 7 of chip U1 is connected to capacitor C4 and power supply voltage VDD, power supply voltage VDD supplies power to chip U2, resistor R1 is a current sensing resistor, pin 5 of chip U1 is connected to capacitor C6, pin 5 of chip U1 amplifies the current signal of resistor R1 and outputs it. Wireless charging decoding section: Pin 5 of chip U1 is connected to pin 1 of chip U2 via resistor R2 and capacitor C5, and pin 3 of chip U2 is connected via resistor R3 and capacitor C7. Resistor R2 and capacitor C5 together with resistor R3 and capacitor C7 form a set. After the power supply passes through pin 2 of chip U1, the voltage output VDD from pin 7 of chip U1 is regulated to power chip U2. After chip U2 is powered on, the PWM output from pin 6 of chip U2 is sent to pin 4 of chip U1 to drive the wireless charging coil. The coil detection communication passes through pin 8 of chip U1, and is then output from the OPO of the internal operational amplifier of chip U1 to pins 1 and 3 of chip U2. Chip U2 identifies the data transmitted from RX by comparing the voltage flip time between the two pins. In the RX-end wireless charging receiver circuit, coil L3 is connected to pin 1 of chip U6 via capacitor C23 to ground. Pin 1 of coil L3 is also connected to capacitor C21 to ground, forming a series-parallel resonance between capacitors C21 and C23. Pin 1 of coil L3 is connected to transistor Q1 to ground via capacitor C22. Pin 1 of transistor Q1 is connected to COMC and resistor R15. COMC is connected to an external MCU. Pin 7 of chip U6 is connected to capacitor C19 to output 5V. Pin 5 of chip U6 is connected to 5V. Pin 6 of chip U6 is connected to the CHG signal and then to the external MCU. Pin 8 of chip U6 is connected to capacitor C20 to ground. Capacitor C22 and transistor Q1 are used to change the oscillation frequency of the entire receiving coil, causing a change in the amplitude of the transmission. The command issued by RX is identified by recognizing the change in amplitude.

2. The microphone charging system for wireless charging and ID transmission as described in claim 1, characterized in that, In the TX charging case circuit, chip U1 is model JDS9311A and chip U2 is model JDS9313-6.

3. A microphone charging system for wireless charging and ID transmission as described in claim 1, characterized in that, The chip U1 in the RX end ring wireless charging receiver circuit is a wireless charging receiver IC JDS9007B.

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