Microphone power supply device integrating current monitoring and portable energy storage

Abstract

The utility model relates to the technical field of electronic device testing, and discloses a microphone power supply device integrating current monitoring and portable energy storage. Comprising an adaptive power supply access unit, a lithium battery protection unit, an intelligent lithium battery equalization charging and discharging regulation and control unit, a high-efficiency direct-current voltage boosting converter, a 12V adjustable voltage reduction control unit, a microphone interface circuit, a five-bit LCD digital ammeter interface circuit and an oscilloscope interface circuit. The intelligent lithium battery equalization charge and discharge regulation and control unit is respectively connected with the adaptive power supply access unit, the lithium battery protection unit, the high-efficiency direct current voltage conversion unit and the five-bit LCD digital ammeter interface circuit, the high-efficiency direct current voltage conversion unit is connected with the 12V adjustable voltage reduction control unit, and the 12V adjustable voltage reduction unit is connected with the microphone interface circuit. The microphone interface circuit is also connected with the five-bit LCD digital ammeter interface circuit and the oscilloscope interface circuit; the device is small in size, clear in circuit structure, high in precision and good in portability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic device testing, and in particular to a microphone power supply device integrating current monitoring and portable energy storage. BACKGROUND

[0002] In the rapid development of the microphone manufacturing industry, the diversification of product lines and the complexity of production environments have raised more stringent requirements for microphone performance testing technology. Although traditional testing equipment meets the basic performance testing needs to some extent, its limitations in actual application have become increasingly prominent, becoming a key factor restricting the improvement of production efficiency and product quality.

[0003] First, the complexity and high cost of testing: the traditional microphone testing process relies on external DC power supplies, current-limiting resistors, digital ammeters, and other auxiliary equipment, which not only increases the complexity and difficulty of testing, but also raises the testing cost due to the use of additional equipment. At the same time, complex connection lines and multiple plugging operations are prone to introduce measurement errors, reducing the accuracy and reliability of the test results.

[0004] Second, the lack of portability and flexibility: with the improvement of production line automation and intelligence, higher requirements are placed on the portability and flexibility of testing equipment. However, traditional testing equipment is often bulky and inconvenient to move quickly between production lines, and relies on fixed power supplies for power, limiting its flexible application in different testing scenarios, especially in cases where frequent movement or outdoor testing is required, this limitation is particularly prominent.

[0005] Third, the challenge of instant and accurate current measurement: the stability of the microphone working current is directly related to its sound quality and durability, therefore, quickly and accurately detecting the working current is an important link in screening defective products and ensuring product quality. The traditional testing method is difficult to meet the needs of instant detection on the production line in terms of measurement speed and accuracy, resulting in low production efficiency and lagging quality control.

[0006] Therefore, there is an urgent need for a microphone power supply testing device that integrates adjustable voltage, high-precision current display, and portable energy storage functions to improve testing efficiency, reduce testing costs, enhance testing flexibility and accuracy, and thus promote the further development of the microphone manufacturing industry.

[0007] The present application is proposed to overcome the shortcomings of the prior art. SUMMARY

[0008] The purpose of the present application is to overcome the shortcomings of the prior art and provide a microphone power supply device integrating current monitoring and portable energy storage.

[0009] The present application can be implemented through the following technical solutions:

[0010] The application discloses a microphone power supply device integrating current monitoring and portable energy storage, which comprises, in sequence, an adaptive power supply access unit, a lithium battery protection unit, an intelligent lithium battery equalization charging and discharging regulation unit, a high-efficiency direct-current voltage lifting converter, a 12V adjustable voltage reduction control unit, a microphone interface circuit, a five-digit LCD digital ammeter interface circuit and an oscilloscope interface circuit, wherein the intelligent lithium battery equalization charging and discharging regulation unit is connected with the adaptive power supply access unit, the lithium battery protection unit, the high-efficiency direct-current voltage lifting converter and the five-digit LCD digital ammeter interface circuit respectively, the high-efficiency direct-current voltage lifting converter is connected with the 12V adjustable voltage reduction control unit, the 12V adjustable voltage reduction unit is connected with the microphone interface circuit, and the microphone interface circuit is further connected with the five-digit LCD digital ammeter interface circuit and the oscilloscope interface circuit.

[0011] Preferably, the adaptive power supply access unit is a Type-C interface circuit, and the lithium battery is charged at a voltage of 5V through the intelligent lithium battery equalization charging and discharging regulation system when the lithium battery has insufficient power.

[0012] Preferably, the lithium battery protection unit is used for connecting a 3.7V lithium battery to the entire circuit system and preventing the lithium battery from working abnormally and damaging other components when the lithium battery is abnormal.

[0013] Preferably, the intelligent lithium battery equalization charging and discharging regulation system is used for controlling the charging and discharging of the lithium battery, the 3.7V lithium battery is boosted to 5V through the built-in voltage lifting circuit of the intelligent lithium battery equalization charging and discharging regulation unit and then supplies power to the subsequent circuit when the Type-C interface is not connected with a data line, and the data line charges the lithium battery at a voltage of 4.2V through the charging management circuit and simultaneously supplies 5V power to the subsequent circuit when the Type-C interface is connected with the data line.

[0014] Preferably, the high-efficiency direct-current voltage lifting converter can boost 5V to 12V.

[0015] Preferably, the 12V adjustable voltage reduction control unit can control the output voltage through an adjustable resistor, and the output range is 0-12V.

[0016] Preferably, the microphone interface circuit is used for connecting a Dupont wire to a microphone pin.

[0017] Preferably, the oscilloscope interface circuit is used for collecting the audio signal picked up by the microphone and connecting the audio signal to an oscilloscope to facilitate observation of the audio waveform.

[0018] As an optional technical solution, the lithium battery protection unit chip adopts IP3005.

[0019] As an optional technical solution, the intelligent lithium battery equalization charging and discharging regulation unit chip adopts TP5400;

[0020] As an optional technical solution, the high-efficiency direct-current voltage boosting converter chip adopts TPS6104;

[0021] As an optional technical solution, the 12V adjustable step-down control unit chip adopts LM317;

[0022] Compared with the prior art, the present application has the following advantages:

[0023] The lithium battery protection circuit and the lithium battery charging management circuit realize safe battery energy storage, and through the mode of boosting first and then reducing, a 0-12V adjustable voltage output is formed, which can adapt to the working voltage requirements of different models of microphones, and a five-bit LCD digital ammeter is integrated to monitor the working current of the microphone in real time, finally forming a small size, clear circuit structure, high precision, good portability, solving the problems of high cost, large size, inconvenient carrying, complex wiring and low measurement efficiency of traditional power supply test equipment. BRIEF DESCRIPTION OF DRAWINGS

[0024] The specific embodiments of the present application will be further described in detail below in combination with the drawings, in which:

[0025] Figure 1 It is a basic function block diagram of the device of the present application;

[0026] Figure 2 It is a schematic diagram of the adaptive power supply access unit of the present application;

[0027] Figure 3 It is a schematic diagram of the lithium battery protection unit of the present application;

[0028] Figure 4 It is a schematic diagram of the intelligent lithium battery equalization charging and discharging regulation unit of the present application;

[0029] Figure 5 It is a schematic diagram of the high-efficiency direct-current voltage boosting converter of the present application;

[0030] Figure 6 It is a schematic diagram of the 12V adjustable step-down control unit of the present application;

[0031] Figure 7 It is a schematic diagram of the microphone interface circuit of the present application;

[0032] Figure 8 It is a schematic diagram of the oscilloscope interface circuit of the present application; DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below in combination with the drawings:

[0034] As Figures 1 to 8 shown, the embodiment discloses a microphone power supply device integrated with current monitoring and portable energy storage, which comprises, in sequence, an adaptive power access unit, a lithium battery protection unit, an intelligent lithium battery equalization charging and discharging regulation unit, a high-efficiency direct-current voltage converter, a 12V adjustable voltage reduction control unit, a microphone interface circuit, a five-digit LCD digital ammeter interface circuit and an oscilloscope interface circuit. The intelligent lithium battery equalization charging and discharging regulation unit is connected with the adaptive power access unit, the lithium battery protection unit, the high-efficiency direct-current voltage converter and the five-digit LCD digital ammeter interface circuit. The high-efficiency direct-current voltage converter is connected with the 12V adjustable voltage reduction control unit. The 12V adjustable voltage reduction unit is connected with the microphone interface circuit. The microphone interface circuit is also connected with the five-digit LCD digital ammeter interface circuit and the oscilloscope interface circuit.

[0035] The adaptive power access unit comprises a USB1 interface, capacitors C0 and C01, resistors R1 and R2, and a Schottky diode D1. The A12 pin, the B12 pin and the 7th pin of the USB1 are directly grounded. The B5 pin of the adaptive power access unit is connected with the ground through the resistor R2. The A5 pin of the adaptive power access unit is connected with the ground through the resistor R1. The A9 pin of the adaptive power access unit is electrically connected with a VBUS contact. The B9 pin of the adaptive power access unit is electrically connected with the VBUS contact. The VBUS contact is connected with the ground through the capacitors C0 and C01 in parallel. The adaptive power access unit is electrically connected with a VCC5V contact through the 2nd pin of the Schottky diode D1. The VCC5V contact is electrically connected with the intelligent lithium battery equalization charging and discharging regulation unit circuit. When the lithium battery is insufficient, the intelligent lithium battery equalization charging and discharging regulation system charges the battery at a voltage of 4.2V, and simultaneously supplies power of 5V to the subsequent circuit.

[0036] The lithium battery protection unit comprises a chip U1 of IP3005, an X1 terminal seat, capacitors C1, C2 and C3, resistors R3, R4 and R5. The 2nd, 3rd and 4th pins of the chip U1 are connected with the ground. The 6th pin of the chip U1 is electrically connected with a BAT+ contact through the resistor R3. The BAT+ contact is electrically connected with the 1st pin of the X1 terminal seat. The 5th, 7th, 8th and 9th pins of the chip U1 are electrically connected with a BAT- contact. The BAT- contact is grounded through the capacitor C2 and is electrically connected with the 2nd pin of the X1 terminal seat. The BAT- contact is electrically connected with the 6th pin of the chip U1 through the capacitor C1. The lithium battery protection unit is used for connecting a 3.7V lithium battery with the entire circuit board, and is used for preventing abnormal operation of the lithium battery and preventing damage to other components when the lithium battery is abnormal.

[0037] The intelligent lithium battery equalization charging and discharging regulation unit includes a chip U2 of a control type TP5400, capacitors C4, C5, C6, C7, C8, C9, an inductor L1, resistors R6, R7, a TVS diode D2, a Schottky diode D3, light emitting diodes LED1 and LED2, the 3rd pin of the chip U2 is electrically connected with the ground through the resistor R7, the 7th pin of the chip U2 is electrically connected with the ground, the 1st pin of the chip U2 is electrically connected with the 5V voltage joint, the capacitors C4 and C5, the TVS diode D2, the Schottky diode D3 and the ground in parallel, the 8th pin of the chip U2 is electrically connected with the Schottky diode D3 and the inductor L1, the 6th pin of the chip U2 is electrically connected with the BAT+ joint, the inductor L1, the capacitors C6, C7 and C8, and the capacitors C6, C7 and C8 are grounded in parallel, the 2nd and 4th pins of the chip U2 are electrically connected with the negative poles of the LED2 and the LED1 respectively, the positive poles of the LED2 and the LED1 are electrically connected with the resistor R6, the 5th pin of the chip U2 is electrically connected with the VCC5V joint, the capacitor C9 and the resistor R6, and the capacitor C9 is grounded. The 5V voltage joint is electrically connected with the high-efficiency DC voltage booster circuit, and the 5V voltage can be boosted to 12V.

[0038] The high-efficiency DC voltage booster includes a chip U3 of a type TPS6104, capacitors C10, C11, C12, an inductor L2, resistors R8, R9 and R10, and a Schottky diode D4, the 1st pin of the chip U3 is electrically connected with the 5V voltage joint through the inductor L2, the 2nd pin of the Schottky diode D4 is electrically connected with the 12V voltage joint, the 1st pin of the Schottky diode D4 is electrically connected with the resistor R8 and the capacitor C10, the Schottky diode D4 is connected with the ground through the capacitor C11, the 2nd pin of the chip U3 is directly grounded, the 3rd pin of the chip U3 is electrically connected with the resistor R9 and the capacitor C10, the chip U3 is connected with the ground through the resistor R10, the 4th and 5th pins of the chip U3 are electrically connected with the 5V voltage joint, and the 4th and 5th pins of the chip U3 are connected with the ground through the capacitor C12. The 12V voltage joint is electrically connected with the 12V adjustable voltage reduction control unit circuit, and the 12V voltage can be controlled by the adjustable resistor to output a voltage in a range of 0-12V.

[0039] The 12V adjustable voltage reduction control unit comprises a chip U4 of LM317 type, capacitors C13, C14, C15, C16, C17, resistors R11, R12, Schottky diodes D5, D6, slide rheostats RP1, RP2, the first pin of the chip U4 is electrically connected with the slide rheostat RP1, the resistor R11 and the second pin of the diode D6, and the first pin of the chip U4 is connected with the ground through the capacitor C17, the slide rheostat RP1 is connected with the ground through the slide rheostat RP2, the second pin of the chip U4 is electrically connected with the 12V voltage connection and the first pin of the Schottky diode D5, and the second pin of the chip U4 is connected with the ground through the capacitors C13 and C14 in parallel, the third pin of the chip U4 is electrically connected with the second pin of the Schottky diode D5, the resistor R11, the first pin of the Schottky diode D6 and the VDD connection, and the third pin of the chip U4 is connected with the ground through the capacitors C15 and C16 in parallel and the resistor R12, the VDD connection is electrically connected with the microphone interface circuit, and is used for connecting the Dupont wire with the microphone pin.

[0040] The microphone interface circuit comprises a switch SW1, sockets X2, capacitors C18, C19, resistors R13, R14, the second pin of the switch SW1 is electrically connected with the M+ connection, and the second pin of the switch SW1 is connected with the ground through the capacitor C19, the first pin of the switch SW1 is electrically connected with the resistor R13, the second pin of the switch SW1 is electrically connected with the resistor R14, and the parallel resistor R13 and the resistor R14 are connected with the ground through the capacitor C18, the M+ connection is electrically connected with the oscilloscope interface circuit, and is used for collecting the audio signal picked up by the microphone and connecting the audio signal to the oscilloscope to facilitate the observation of the audio waveform.

[0041] The oscilloscope interface circuit comprises a BNC1 interface, capacitors C20, Schottky diodes D7, the second pin, the third pin, the fourth pin and the fifth pin of the BNC1 interface are grounded, the first pin of the BNC1 interface is electrically connected with the M+ connection through the capacitor C20, and the first pin of the BNC1 interface is connected with the ground through the first pin of the Schottky diode D7.

[0042] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, the embodiments can be changed, modified, replaced and changed in various ways without departing from the technical principles of the present application, and these changes, modifications, replacements and changes should be regarded as the protection scope of the present application.

Claims

1. A microphone powered device integrating current monitoring and portable energy storage, characterized in that, The application comprises sequentially connected adaptive power access unit, lithium battery protection unit, intelligent lithium battery equalization charging and discharging regulation unit, efficient DC voltage converter, 12V adjustable voltage reduction control unit, microphone interface circuit, five-bit LCD digital ammeter interface circuit and oscilloscope interface circuit.

2. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, The adaptive power access unit comprises USB1 interface, capacitor C0, capacitor C01, resistor R1, resistor R2 and Schottky diode D1, the A12 pin, B12 pin and the 7th pin of the USB1 are directly grounded, the B5 pin of the adaptive power access unit is connected with the ground through the resistor R2, the A5 pin of the adaptive power access unit is connected with the ground through the resistor R1, the A9 pin of the adaptive power access unit is electrically connected with the VBUS contact point, the B9 pin of the adaptive power access unit is electrically connected with the VBUS contact point, the VBUS contact point is connected with the ground through the parallel capacitor C0 and capacitor C01, and the adaptive power access unit is electrically connected with the VCC5V contact point through the 2nd pin of the Schottky diode D1; the VCC5V contact point is electrically connected with the intelligent lithium battery equalization charging and discharging regulation unit circuit.

3. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, The lithium battery protection unit comprises chip U1 with the model of IP3005, X1 terminal seat, capacitor C1, capacitor C2, capacitor C3, resistor R3, resistor R4 and capacitor R5, the 2nd, 3rd and 4th pins of the chip U1 are connected with the ground, the 6th pin of the chip U1 is electrically connected with the BAT+ contact point through the resistor R3, and the BAT+ contact point is electrically connected with the 1st pin of the X1 terminal seat, the 5th, 7th, 8th and 9th pins of the chip U1 are electrically connected with the BAT- contact point, the BAT- contact point is grounded through the capacitor C2 and electrically connected with the 2nd pin of the X1 terminal seat, and the BAT- contact point is electrically connected with the 6th pin of the chip U1 through the capacitor C1.

4. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, The intelligent lithium battery equalization charging and discharging regulation unit comprises a chip U2 of a control type of TP5400, capacitors C4, C5, C6, C7, C8, C9, an inductor L1, resistors R6, R7, a TVS diode D2, a Schottky diode D3, light emitting diodes LED1 and LED2, the 3rd pin of the chip U2 is electrically connected with the ground through the resistor R7, the 7th pin of the chip U2 is electrically connected with the ground, the 1st pin of the chip U2 is electrically connected with the 5V voltage joint respectively, and the capacitors C4 and C5, the TVS diode D2 are connected in parallel and grounded, the 8th pin of the chip U2 is electrically connected with the Schottky diode D3 and the inductor L1 respectively, the 6th pin of the chip U2 is electrically connected with the BAT+ joint, the inductor L1, the capacitors C6, C7 and C8 respectively, and the capacitors C6, C7 and C8 are connected in parallel and grounded, the 2nd and 4th pins of the chip U2 are electrically connected with the negative poles of the LED2 and the LED1 respectively, the positive poles of the LED2 and the LED1 are electrically connected with the resistor R6, the 5th pin of the chip U2 is electrically connected with the VCC5V joint, the capacitor C9 and the resistor R6 respectively, and the capacitor C9 is grounded.

5. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, The high-efficiency direct-current voltage boosting converter comprises a chip U3 of a type of TPS6104, capacitors C10, C11 and C12, an inductor L2, resistors R8, R9 and R10, and a Schottky diode D4, the 1st pin of the chip U3 is electrically connected with the 5V voltage joint through the inductor L2, the 2nd pin of the Schottky diode D4 is electrically connected with the 12V voltage joint, the 1st pin of the Schottky diode D4 is electrically connected with the resistor R8 and the capacitor C10, the Schottky diode D4 is connected with the ground through the capacitor C11, the 2nd pin of the chip U3 is directly grounded, the 3rd pin of the chip U3 is electrically connected with the resistor R9 and the capacitor C10, the chip U3 is connected with the ground through the resistor R10, the 4th and 5th pins of the chip U3 are electrically connected with the 5V voltage joint, and the 4th and 5th pins of the chip U3 are connected with the ground through the capacitor C12.

6. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, 12V adjustable voltage reduction control unit includes chip U4 of chip type LM317, capacitor C13, capacitor C14, capacitor C15, capacitor C16, capacitor C17, resistor R11, resistor R12, Schottky diode D5, Schottky diode D6, slide rheostat RP1, slide rheostat RP2, the first pin of chip U4 is electrically connected with slide rheostat RP1, resistor R11, the second pin of diode D6, and the first pin of chip U4 is connected with ground through capacitor C17, slide rheostat RP1 is connected with ground through slide rheostat RP2, the second pin of chip U4 is electrically connected with 12V voltage contact and the first pin of Schottky diode D5, and the second pin of chip U4 is connected with ground through parallel capacitor C13 and capacitor C14, the third pin of chip U4 is electrically connected with the second pin of Schottky diode D5, resistor R11, the first pin of Schottky diode D6 and VDD contact, and the third pin of chip U4 is connected with ground through parallel capacitor C15, capacitor C16 and resistor R12.

7. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, The microphone interface circuit includes switch SW1, socket X2, capacitors C18, C19, resistors R13, R14, the second pin of switch SW1 is electrically connected with M+ contact, and the second pin of switch SW1 is connected with ground through capacitor C19, the first pin of switch SW1 is electrically connected with resistor R13, the second pin of switch SW1 is electrically connected with resistor R14, and parallel resistor R13 and resistor R14 are connected with ground through capacitor C18.

8. The integrated current monitoring and portable energy storage microphone powered device of claim 1, wherein, The oscilloscope interface circuit includes BNC1 interface, capacitor C20, Schottky diode D7, the second pin, the third pin, the fourth pin and the fifth pin of BNC1 interface are grounded, the first pin of BNC1 interface is electrically connected with M+ contact through capacitor C20, and the first pin of BNC1 interface is connected with ground through the first pin of Schottky diode D7.

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