Wireless Bluetooth earphone battery electric quantity and voltage synchronous test circuit and test system

Abstract

The utility model provides a wireless Bluetooth headset battery electric quantity and voltage synchronous test circuit. The wireless Bluetooth headset battery electric quantity and voltage synchronous test circuit comprises an upper computer terminal module and a synchronous voltage acquisition module. The synchronous voltage acquisition module is composed of a voltage monitoring piece, two divider resistors and two electronic switch tubes. The voltage monitoring part is used for being connected with the positive electrode of a to-be-tested earphone battery and connected with the negative electrode through the first electronic switching tube, and real-time monitoring of voltage is achieved. And the second electronic switch tube is used for being connected with a data acquisition end of the upper computer terminal module to realize synchronous transmission of data. According to the circuit, the real-time voltage value is read through the voltage monitoring part, and the electric quantity percentage obtained by upper computer test software is combined to realize synchronous correspondence of the electric quantity and the voltage, so that an engineer can visually display the change of the electric quantity of an earphone battery and timely discover the defect of electric quantity jump, and the reliability of a product is further improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of earphone battery testing, and in particular to a wireless Bluetooth earphone battery power and voltage synchronization testing circuit and testing system. Background Art

[0002] In today's era of rapid development of mobile electronic devices, wireless Bluetooth headsets are known for their unique convenience and excellent battery life. However, existing battery life testing technology for wireless Bluetooth headsets primarily focuses on basic tests of battery voltage discharge curves and playback time. While this testing method can provide a certain degree of insight into the battery performance of headsets, it cannot accurately measure and evaluate the percentage change in battery life during actual use. As a result, users may experience sudden jumps in battery power, such as a rapid drop from a full charge to a low level, which seriously impacts the user experience and product reliability.

[0003] Furthermore, current battery life testing methods are limited to testing battery voltage, but fail to effectively correlate battery voltage with battery charge percentage. This testing method is not only highly repetitive and labor-intensive, but also prone to misjudgments and miscalculations due to inaccurate testing, further impacting the quality of wireless earphones. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a wireless Bluetooth headset battery power and voltage synchronization test circuit that synchronously records the power percentage and voltage value through a Bluetooth dongle.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A wireless Bluetooth headset battery power and voltage synchronization test circuit includes a host computer terminal module and a synchronous voltage acquisition module. The host computer terminal module is used to communicate with the wireless Bluetooth headset to be tested through a Bluetooth dongle to obtain the battery percentage information of the headset.

[0007] The synchronous voltage acquisition module includes a voltage monitoring component, a first voltage dividing resistor, a second voltage dividing resistor, a first electronic switch tube and a second electronic switch tube. The first end of the voltage monitoring component is used to connect to the positive electrode of the wireless Bluetooth headset battery to be tested, the second end of the voltage monitoring component is connected to the first end of the first electronic switch tube, the control end of the first electronic switch tube is connected to the voltage acquisition control end of the host computer terminal module, the second end of the first electronic switch tube is used to connect to the negative electrode of the headset battery to be tested, the first end of the first voltage dividing resistor is connected to the control end of the first electronic switch tube, and the second end of the first voltage dividing resistor is connected to the voltage acquisition control end of the host computer terminal module.

[0008] The first end of the second electronic switch tube is connected to the first end of the voltage monitoring component, the second end of the second electronic switch tube is connected to the data acquisition end of the host computer terminal module, and the control end of the second electronic switch tube is connected to the synchronous measurement signal output end of the host computer terminal module.

[0009] In one embodiment, the synchronous voltage acquisition module further includes a first bias resistor, a first end of the first bias resistor is connected to the control end of the first electronic switch tube, and a second end of the first bias resistor is connected to the second end of the first electronic switch tube.

[0010] In one embodiment, the synchronous voltage acquisition module further includes a second bias resistor, a first end of the second bias resistor is connected to the control end of the second electronic switch tube, and a second end of the second bias resistor is connected to the second end of the second electronic switch tube.

[0011] In one embodiment, the synchronous voltage acquisition module also includes a first reverse blocking diode, the anode of the first reverse blocking diode is connected to the voltage acquisition control end of the host terminal module, and the cathode of the first reverse blocking diode is connected to the second end of the first voltage divider resistor.

[0012] In one embodiment, the synchronous voltage acquisition module also includes a second reverse blocking diode, the anode of the second reverse blocking diode is connected to the synchronous measurement signal output end of the host terminal module, and the cathode of the second reverse blocking diode is connected to the second end of the second voltage divider resistor.

[0013] In one embodiment, the synchronous voltage acquisition module also includes a third reverse blocking diode, the anode of the third reverse blocking diode is connected to the second end of the second electronic switch tube, and the cathode of the third reverse blocking diode is connected to the data acquisition end of the host computer terminal module.

[0014] In one embodiment, the synchronous voltage acquisition module further includes an acquisition-end current-limiting resistor, a first end of the acquisition-end current-limiting resistor is connected to the second end of the second electronic switch tube, and a second end of the acquisition-end current-limiting resistor is connected to the data acquisition end of the host terminal module.

[0015] In one embodiment, the synchronous voltage acquisition module further includes an acquisition-end filter capacitor, a first end of the acquisition-end filter capacitor is connected to a second end of the acquisition-end current-limiting resistor, and a second end of the acquisition-end filter capacitor is grounded.

[0016] In one embodiment, the first electronic switch tube and the second electronic switch tube are both NPN transistors.

[0017] A testing system includes the wireless Bluetooth headset battery power and voltage synchronization testing circuit as described in any one of the above items.

[0018] Compared with the prior art, the present disclosure has at least the following advantages:

[0019] The above-mentioned wireless Bluetooth headset battery power and voltage synchronization test circuit reads the real-time voltage value through the voltage monitoring device, and obtains the headset power percentage through the Bluetooth dongle and the host computer test software, so that the power percentage and voltage are synchronized, and the corresponding relationship between the voltage, power percentage and timestamp is integrated, so that it can intuitively display whether there is a jump in the headset battery power, as well as the time point of the jump and the corresponding voltage value. This is beneficial for engineers to analyze the power curve and promptly discover possible defects and faults of battery power jumps, thereby improving product reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A circuit diagram of a synchronous voltage acquisition module according to an embodiment;

[0022] Figure 2 This is the working principle diagram of the wireless Bluetooth headset battery power and voltage synchronization test circuit. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0027] like Figure 1 As shown, a wireless Bluetooth headset battery power and voltage synchronization test circuit 10 of an embodiment of the present disclosure includes a host computer terminal module and a synchronization voltage acquisition module. The host computer terminal module is used to communicate with the wireless Bluetooth headset to be tested through a Bluetooth dongle to obtain the battery percentage information of the headset.

[0028] The synchronous voltage acquisition module includes a voltage monitoring component V, a first voltage-dividing resistor R1, a second voltage-dividing resistor R2, a first electronic switch tube Q1 and a second electronic switch tube Q2. The first end of the voltage monitoring component V is used to connect to the positive pole of the wireless Bluetooth headset battery to be tested, the second end of the voltage monitoring component V is connected to the first end of the first electronic switch tube Q1, the control end of the first electronic switch tube Q1 is connected to the voltage acquisition control end PWM1 of the host computer terminal module, the second end of the first electronic switch tube Q1 is used to connect to the negative pole of the headset battery to be tested, the first end of the first voltage-dividing resistor R1 is connected to the control end of the first electronic switch tube Q1, and the second end of the first voltage-dividing resistor R1 is connected to the voltage acquisition control end PWM1 of the host computer terminal module.

[0029] The first end of the second electronic switch tube Q2 is connected to the first end of the voltage monitoring component V, the second end of the second electronic switch tube Q2 is connected to the data acquisition terminal I / O of the host computer terminal module, and the control end of the second electronic switch tube Q2 is connected to the synchronous measurement signal output terminal PWM2 of the host computer terminal module.

[0030] In this embodiment, first, the host terminal module establishes a connection with the wireless Bluetooth headset to be tested through a Bluetooth dongle to obtain the battery percentage information of the headset, and then the host terminal module sends an initialization signal to the synchronous voltage acquisition module to put each electronic switch tube in the initial state. Among them, the Bluetooth dongle is functionally equivalent to a Bluetooth adapter, so that devices that originally do not have Bluetooth function can communicate and connect with other devices through the Bluetooth dongle, thereby realizing wireless data transmission. When the host terminal module starts to measure the battery of the headset, the voltage acquisition control terminal PWM1 of the host terminal module sends a high-level signal to the control terminal of the first electronic switch tube Q1, so that the voltage at the control terminal of the first electronic switch tube Q1 is greater than its threshold voltage and is in the on state, thereby allowing the voltage monitoring component V to be connected in parallel with the monitoring headset battery through the first electronic switch tube Q1 and measure the voltage value of the headset battery in real time. At the same time, the synchronous measurement signal output terminal PWM2 of the host terminal module sends a high-level signal to the control terminal of the second electronic switch tube Q2, so that the voltage at the control terminal of the second electronic switch tube Q2 is greater than its threshold voltage and is in the on state, thereby transmitting the voltage signal collected by the voltage monitoring component V to the data acquisition terminal I / O of the host computer. At this time, the host computer reads the battery percentage information of the headset through the Bluetooth dongle, and integrates the collected voltage value, battery percentage and timestamp, and outputs the corresponding relationship chart. This allows engineers to intuitively analyze whether there is a jump in the battery power of the headset in the working state, the time point of the jump and its corresponding voltage value through the integrated data. Among them, the working principle of the host computer reading the battery percentage information of the headset through the Bluetooth dongle and integrating the collected voltage value, battery percentage and timestamp is detailed in Figure 2 .

[0031] The above-mentioned wireless Bluetooth headset battery power and voltage synchronization test circuit 10 reads the real-time voltage value through the voltage monitoring component V, and obtains the battery percentage of the headset through the Bluetooth dongle and the host computer test software, so that the battery percentage and voltage are synchronized, and the correspondence between the voltage, power percentage and timestamp is integrated, so that it can intuitively display whether there is a jump in the battery power of the headset, as well as the time point of the jump and the corresponding voltage value, which is beneficial for engineers to analyze the power curve and promptly discover possible defects and faults of battery power jumps, thereby improving the reliability of the product.

[0032] like Figure 1As shown, in one embodiment, the synchronous voltage acquisition module further includes a first bias resistor R3, wherein a first end of the first bias resistor R3 is connected to the control end of the first electronic switch Q1, and a second end of the first bias resistor R3 is connected to the second end of the first electronic switch Q1. In this embodiment, when the voltage acquisition control terminal PWM1 of the host terminal module outputs a low-level signal, the first bias resistor R3 ensures a stable bias voltage between the control end and the second end of the first electronic switch Q1, thereby maintaining the first electronic switch Q1 in a stable off state. When the voltage acquisition control terminal PWM1 of the host terminal module outputs a high-level signal, the first bias resistor R3 and the high-level signal provided by the host terminal module jointly determine the current flowing into the control end of the first electronic switch Q1, thereby accurately controlling the conduction of the first electronic switch Q1 and allowing the voltage monitoring component V to be connected in parallel with the headphone battery through the first electronic switch Q1, thereby ensuring accurate voltage measurement. In addition, the first bias resistor R3 also serves as a current limiter, preventing damage to the first electronic switch Q1 caused by excessively high-level signals.

[0033] like Figure 1 As shown, in one embodiment, the synchronous voltage acquisition module further includes a second bias resistor R4, wherein a first end of the second bias resistor R4 is connected to the control end of the second electronic switch tube Q2, and a second end of the second bias resistor R4 is connected to the second end of the second electronic switch tube Q2. In this embodiment, when the synchronous measurement signal output terminal PWM2 of the host terminal module outputs a low-level signal, the second bias resistor R4 can ensure that the control end and the second end of the second electronic switch tube Q2 have a stable bias voltage, which is conducive to maintaining the second electronic switch tube Q2 in a stable off state. When the synchronous measurement signal output terminal PWM2 of the host terminal module sends a high-level signal, the second bias resistor R4 and the high-level signal provided by the host terminal module jointly determine the current flowing into the control end of the second electronic switch tube Q2, thereby accurately controlling the conduction of the second electronic switch tube Q2, thereby allowing the host computer to obtain an accurate voltage value through the data acquisition terminal I / O.

[0034] like Figure 1As shown, in one embodiment, the synchronous voltage acquisition module further includes a first reverse blocking diode D1, the anode of the first reverse blocking diode D1 being connected to the voltage acquisition control terminal PWM1 of the host terminal module, and the cathode of the first reverse blocking diode D1 being connected to the second end of the first voltage divider resistor R1. In this embodiment, the first reverse blocking diode D1 is primarily used to prevent reverse current from the headphone battery from flowing back to the voltage acquisition control terminal PWM1 of the host terminal module when the voltage acquisition control terminal PWM1 of the host terminal module outputs a low-level signal, thereby protecting the control circuit of the host terminal module from damage. Specifically, when the first electronic switch tube Q1 is turned off, the first reverse blocking diode D1 is in a reverse biased state. Its high impedance characteristics can effectively block the path of reverse current flowing from the voltage monitoring device V or the headphone battery through the control terminal of the first electronic switch tube Q1 to the host terminal module, thereby ensuring that the host terminal module can operate normally.

[0035] like Figure 1 As shown, in one embodiment, the synchronous voltage acquisition module further includes a second reverse blocking diode D2, the anode of the second reverse blocking diode D2 is connected to the synchronous measurement signal output terminal PWM2 of the host terminal module, and the cathode of the second reverse blocking diode D2 is connected to the second end of the second voltage divider resistor R2. In this embodiment, the second reverse blocking diode D2 is mainly used to prevent the reverse current of the earphone battery from flowing back to the synchronous measurement signal output terminal PWM2 of the host terminal module when the synchronous measurement signal output terminal PWM2 of the host terminal module outputs a low-level signal, thereby protecting the control circuit of the host terminal module from damage. Specifically, when the second electronic switch tube Q2 is turned off, the second reverse blocking diode D2 is in a reverse biased state, and its high impedance characteristics can effectively block the path of the reverse current flowing from the voltage monitoring component V or the earphone battery through the control end of the second electronic switch tube Q2 to the host terminal module, thereby ensuring that the host terminal module can operate normally.

[0036] like Figure 1As shown, in one embodiment, the synchronous voltage acquisition module further includes a third reverse blocking diode D3, the anode of the third reverse blocking diode D3 being connected to the second end of the second electronic switch Q2, and the cathode of the third reverse blocking diode D3 being connected to the data acquisition terminal I / O of the host computer terminal module. In this embodiment, the primary function of the third reverse blocking diode D3 is to ensure that the second electronic switch Q2 and the voltage monitoring device V are not affected by the reverse current from the data acquisition terminal I / O of the host computer terminal module. Specifically, when the second electronic switch Q2 is turned off, if the data acquisition terminal I / O of the host computer terminal module generates a reverse current, the third reverse blocking diode D3 is in a reverse biased state. By utilizing its high impedance characteristics, it can effectively block the reverse current, thereby preventing the reverse current from flowing through the second electronic switch Q2 or interfering with or damaging the voltage monitoring device V, thereby ensuring the accuracy and stability of data acquisition.

[0037] like Figure 1 As shown, in one embodiment, the synchronous voltage acquisition module further includes an acquisition-end current-limiting resistor R5. The first end of the acquisition-end current-limiting resistor R5 is connected to the second end of the second electronic switch Q2, and the second end of the acquisition-end current-limiting resistor R5 is connected to the data acquisition terminal I / O of the host terminal module. In this embodiment, the acquisition-end current-limiting resistor R5 primarily functions to limit the current flowing from the voltage monitoring component V through the second electronic switch Q2 to the data acquisition terminal I / O of the host terminal module, thereby protecting the input circuit of the host terminal module from damage caused by excessive current. When the second electronic switch Q2 is in the on state, the headphone battery voltage signal collected by the voltage monitoring component V is transmitted to the data acquisition terminal I / O of the host terminal module through the second electronic switch Q2 and the acquisition-end current-limiting resistor R5, thereby helping to maintain the stability and accuracy of data acquisition and ensuring that the host terminal module can accurately obtain voltage values.

[0038] like Figure 1 As shown, in one embodiment, the synchronous voltage acquisition module also includes an acquisition-end filter capacitor C1, the first end of the acquisition-end filter capacitor C1 is connected to the second end of the acquisition-end current-limiting resistor R5, and the second end of the acquisition-end filter capacitor C1 is grounded. In this embodiment, the main function of the acquisition-end filter capacitor C1 is to filter out high-frequency noise and interference in the voltage signal transmitted from the voltage monitoring component V to the data acquisition terminal I / O of the host terminal module through the second electronic switch tube Q2, so as to ensure that the collected voltage signal is smoother and more stable. Specifically, after the voltage signal passes through the acquisition-end current-limiting resistor R5, the acquisition-end filter capacitor C1 will use its charge and discharge characteristics to filter the high-frequency components in the signal. For high-frequency noise, due to its fast change speed, the filter capacitor can respond and absorb these noise energies in a timely manner, convert them into heat energy and dissipate them, thereby avoiding the impact of noise on subsequent circuits.

[0039] like Figure 1 As shown, in one embodiment, the first electronic switch Q1 and the second electronic switch Q2 are both NPN transistors. In this embodiment, the first end of the first electronic switch Q1 and the first end of the second electronic switch Q2 serve as the collectors of the NPN transistors, the second end of the first electronic switch Q1 and the second end of the second electronic switch Q2 serve as the emitters of the NPN transistors, and the control end of the first electronic switch Q1 and the control end of the second electronic switch Q2 serve as the bases of the NPN transistors. When the voltage acquisition control terminal PWM1 of the host terminal module sends a high-level signal, the high-level signal is applied to the base of the first electronic switch Q1 through the first voltage divider resistor R1, causing the voltage difference between the base and the emitter to exceed the conduction threshold voltage of the first electronic switch Q1. The first electronic switch Q1 enters a saturated conduction state, thereby allowing the voltage monitoring component V to be connected in parallel with the headphone battery to be tested, thereby monitoring the headphone battery voltage. At the same time, when the synchronous measurement signal output terminal PWM2 of the host terminal module issues a high-level signal, this high-level signal causes the voltage difference between the base and emitter of the second electronic switch Q2 to exceed its conduction threshold voltage, thereby turning the second electronic switch Q2 on. This allows the voltage signal collected by the voltage monitoring component V to pass through the second electronic switch Q2 and be transmitted to the data acquisition terminal I / O of the host terminal module. On the other hand, when the voltage acquisition control terminal PWM1 and the synchronous measurement signal output terminal PWM2 of the host terminal module issue low-level signals, the voltage difference between the base and emitter of both the first and second electronic switches Q1 and Q2 falls below their conduction threshold voltages, turning both electronic switches off. Consequently, the first electronic switch Q1 blocks the connection between the voltage monitoring component V and the headphone battery under test, while the second electronic switch Q2 blocks the transmission path of the voltage signal to the data acquisition terminal I / O of the host terminal module, thereby ensuring the safety and stability of the circuit when measurement is not required.

[0040] A test system includes a wireless Bluetooth headset battery power and voltage synchronization test circuit 10 as described above. In this embodiment, first, the host computer terminal module establishes a connection with the wireless Bluetooth headset to be tested through a Bluetooth dongle to obtain the battery percentage information of the headset, and then the host computer terminal module sends an initialization signal to the synchronization voltage acquisition module to put each electronic switch tube in the initial state. Among them, the Bluetooth dongle is functionally equivalent to a Bluetooth adapter, so that devices that originally do not have Bluetooth function can communicate and connect with other devices through the Bluetooth dongle, thereby realizing wireless data transmission. When the host computer terminal module starts to measure the headset battery, the voltage acquisition control terminal PWM1 of the host computer terminal module sends a high-level signal to the control terminal of the first electronic switch tube Q1, so that the voltage at the control terminal of the first electronic switch tube Q1 is greater than its threshold voltage and is in the on state, thereby allowing the voltage monitoring component V to be connected in parallel with the monitoring headset battery through the first electronic switch tube Q1 and measure the voltage value of the headset battery in real time. At the same time, the synchronous measurement signal output terminal PWM2 of the host terminal module sends a high-level signal to the control terminal of the second electronic switch Q2, causing the voltage at the control terminal of the second electronic switch Q2 to exceed its threshold voltage and enter the on state, thereby transmitting the voltage signal collected by the voltage monitoring component V to the data acquisition terminal I / O of the host computer. At this time, the host computer reads the battery percentage information of the headset through the Bluetooth dongle, integrates the collected voltage value, battery percentage, and timestamp, and outputs a corresponding relationship chart. This integrated data allows engineers to intuitively analyze whether the headset battery power level has jumped during operation, the time of the jump, and the corresponding voltage value.

[0041] Compared with the prior art, the present disclosure has at least the following advantages:

[0042] The above-mentioned wireless Bluetooth headset battery power and voltage synchronization test circuit 10 reads the real-time voltage value through the voltage monitoring component V, and obtains the battery percentage of the headset through the Bluetooth dongle and the host computer test software, so that the battery percentage and voltage are synchronized, and the correspondence between the voltage, power percentage and timestamp is integrated, so that it can intuitively display whether there is a jump in the battery power of the headset, as well as the time point of the jump and the corresponding voltage value, which is beneficial for engineers to analyze the power curve and promptly discover possible defects and faults of battery power jumps, thereby improving the reliability of the product.

[0043] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. A wireless Bluetooth headset battery power and voltage synchronization test circuit, characterized in that: It includes a host computer terminal module and a synchronous voltage acquisition module. The host computer terminal module is used to communicate with the wireless Bluetooth headset to be tested through a Bluetooth dongle to obtain the battery percentage information of the headset; The synchronous voltage acquisition module includes a voltage monitoring component, a first voltage dividing resistor, a second voltage dividing resistor, a first electronic switch tube and a second electronic switch tube. The first end of the voltage monitoring component is used to be connected to the positive electrode of the wireless Bluetooth headset battery to be tested, the second end of the voltage monitoring component is connected to the first end of the first electronic switch tube, the control end of the first electronic switch tube is connected to the voltage acquisition control end of the host computer terminal module, the second end of the first electronic switch tube is used to be connected to the negative electrode of the headset battery to be tested, the first end of the first voltage dividing resistor is connected to the control end of the first electronic switch tube, and the second end of the first voltage dividing resistor is connected to the voltage acquisition control end of the host computer terminal module; The first end of the second electronic switch tube is connected to the first end of the voltage monitoring component, the second end of the second electronic switch tube is connected to the data acquisition end of the host computer terminal module, and the control end of the second electronic switch tube is connected to the synchronous measurement signal output end of the host computer terminal module.

2. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The synchronous voltage acquisition module further includes a first bias resistor, a first end of the first bias resistor is connected to the control end of the first electronic switch tube, and a second end of the first bias resistor is connected to the second end of the first electronic switch tube.

3. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The synchronous voltage acquisition module further includes a second bias resistor, a first end of the second bias resistor is connected to the control end of the second electronic switch tube, and a second end of the second bias resistor is connected to the second end of the second electronic switch tube.

4. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The synchronous voltage acquisition module also includes a first reverse blocking diode, the anode of the first reverse blocking diode is connected to the voltage acquisition control end of the host terminal module, and the cathode of the first reverse blocking diode is connected to the second end of the first voltage divider resistor.

5. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The synchronous voltage acquisition module also includes a second reverse blocking diode, the anode of the second reverse blocking diode is connected to the synchronous measurement signal output end of the host terminal module, and the cathode of the second reverse blocking diode is connected to the second end of the second voltage divider resistor.

6. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The synchronous voltage acquisition module also includes a third reverse blocking diode, the anode of the third reverse blocking diode is connected to the second end of the second electronic switch tube, and the cathode of the third reverse blocking diode is connected to the data acquisition end of the host computer terminal module.

7. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The synchronous voltage acquisition module also includes an acquisition-end current-limiting resistor, a first end of which is connected to the second end of the second electronic switch tube, and a second end of which is connected to the data acquisition end of the host terminal module.

8. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 7, characterized in that: The synchronous voltage acquisition module further includes an acquisition-end filter capacitor, a first end of the acquisition-end filter capacitor is connected to the second end of the acquisition-end current-limiting resistor, and a second end of the acquisition-end filter capacitor is grounded.

9. The wireless Bluetooth headset battery power and voltage synchronization test circuit according to claim 1, characterized in that: The first electronic switch tube and the second electronic switch tube are both NPN transistors.

10. A testing system, characterized in that: The invention comprises a wireless Bluetooth headset battery power and voltage synchronization test circuit as described in any one of claims 1 to 9.

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