Wireless microphone receiving device

Abstract

The utility model discloses a wireless microphone receiving device, and relates to the technical field of wireless microphones. According to the utility model, the wireless microphone charging module and the signal processing module are arranged in the control circuit of the wireless microphone receiving device, and the wireless microphone receiving device can process wireless signals of the wireless microphone through the signal processing module; the charging groove is formed, the first output end of the wireless microphone charging module serves as a wireless microphone charging port, and the wireless microphone charging port is formed in the charging groove, so that the charging groove has the capacity of charging the wireless microphone on the basis of the capacity of accommodating the wireless microphone; therefore, the wireless microphone receiving device can store and charge the wireless microphone, the inconvenience that an additional charging wire and a storage device are needed to charge and store the wireless microphone in the prior art is avoided, the storage and charging convenience of the wireless microphone is improved, and the practicability of the wireless microphone receiving device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wireless microphone technical field especially relates to a wireless microphone receiving device. BACKGROUND

[0002] With the continuous development of microphone technology, wireless microphone has been widely used in teaching, entertainment and other fields. Although wireless microphone has the characteristics of flexibility and high, but it needs to be equipped with a wireless microphone receiving device to realize the receiving of wireless signal, and convert into audio signal.

[0003] But the current wireless microphone receiving device provides the function relatively single, usually only provides the function of restoring wireless signal to audio signal, and this single function leads to the inconvenient use of wireless microphone, makes wireless microphone need additional charging line to charge, and needs additional storage device to store wireless microphone, which causes trouble to the daily use of wireless microphone. In addition, wireless microphone also has the risk of sudden damage, which leads to the unsatisfactory use of wireless microphone. Therefore, at present, a wireless microphone receiving device is needed to solve the defects of the prior art. SUMMARY

[0004] The utility model aims at providing a kind of wireless microphone receiving device, to solve the above technical problems, by charging recess and wireless microphone charging module, wireless microphone receiving device is stored and charged to wireless microphone, improve the practicality of wireless microphone receiving device.

[0005] In order to solve the above technical problems, the utility model embodiment provides a kind of wireless microphone receiving device, including base, control circuit and wireless microphone being set in the base interior, the base is equipped with charging recess;The control circuit includes wireless microphone charging module and signal processing module;

[0006] Among them, the input end of the wireless microphone charging module is used as power supply interface;The first output end of the wireless microphone charging module is used as wireless microphone charging port;The second output end of the wireless microphone charging module is electrically connected with the power supply input end of the signal processing module;The wireless microphone is communicatively connected with the first signal input end of the control circuit;The wireless microphone charging port is arranged in the charging recess;When wireless microphone is detachably connected with the charging recess, the wireless microphone is electrically connected with the wireless microphone charging port.

[0007] It can be understood that, relative to the prior art, the utility model discloses a wireless microphone charging module and signal processing module are arranged in the control circuit of wireless microphone receiving device, and the wireless microphone receiving device can process the wireless signal of wireless microphone through the signal processing module, and the charging recess is set, the first output end of wireless microphone charging module is used as wireless microphone charging port, the wireless microphone charging port is arranged in the charging recess, the charging recess has the capacity of charging wireless microphone on the basis of having the capacity of containing wireless microphone, thereby realizing the containing and charging of wireless microphone receiving device to wireless microphone, avoiding the inconvenience of charging and containing wireless microphone through additional charging wire and storage device in the prior art, improving the containing and charging convenience of wireless microphone, thereby improving the practicability of wireless microphone receiving device.

[0008] As a preferred scheme, the wireless microphone charging module comprises a power adapter interface, a fifth light emitting diode, a forty-seventh resistor, a first diode, a second diode, a second electrolytic capacitor, a third capacitor, a fourth capacitor, a voltage reducing stabilizer, a third diode, a second inductor, a fourth electrolytic capacitor, a seventh capacitor and a sixth capacitor; the first output port of the power adapter interface is electrically connected with the first end of the forty-seventh resistor; the second output port and the third output port of the power adapter interface are grounded; the second end of the forty-seventh resistor is electrically connected with the first end of the fifth light emitting diode; the second end of the fifth light emitting diode is grounded; the first end of the first diode is electrically connected with the first output port of the power adapter interface; the second end of the first diode is electrically connected with the first end of the second diode; the second end of the second diode is grounded; the first end of the second electrolytic capacitor, the first end of the third capacitor and the first end of the fourth capacitor are respectively electrically connected with the second end of the first diode; the second end of the second electrolytic capacitor, the second end of the third capacitor and the second end of the fourth capacitor are grounded; the first end of the voltage reducing stabilizer is electrically connected with the second end of the first diode; the third end and the fifth end of the voltage reducing stabilizer are grounded; the second end of the voltage reducing stabilizer is electrically connected with the first end of the third diode; the fourth end of the voltage reducing stabilizer is electrically connected with the first end of the fourth electrolytic capacitor; the second end of the third diode is grounded; the second end of the fourth electrolytic capacitor is grounded; the first end of the second inductor is electrically connected with the second end of the voltage reducing stabilizer; the second end of the second inductor is electrically connected with the first end of the fourth electrolytic capacitor; the first end of the seventh capacitor is electrically connected with the second end of the second inductor; the first end of the sixth capacitor is electrically connected with the second end of the second inductor; the second end of the seventh capacitor and the second end of the sixth capacitor are grounded; the input end of the power adapter interface is the input end of the wireless microphone charging module; the first end of the sixth capacitor is the first output end of the wireless microphone charging module; the first end of the sixth capacitor is the second output end of the wireless microphone charging module.

[0009] As a preferred scheme, the wireless microphone receiving device further comprises a charging base; the charging base is arranged in the charging groove; the input end of the charging base is electrically connected with the first end of the sixth capacitor; when the wireless microphone is detachably connected with the charging groove, the wireless microphone is electrically connected with the output end of the charging base.

[0010] As a preferred scheme, the charging base comprises a current limiting resistor and a charging spring needle; the first end of the current limiting resistor is electrically connected with the first end of the sixth capacitor; the first input end of the needle seat of the charging spring needle is electrically connected with the second end of the current limiting resistor; the second input end of the needle seat of the charging spring needle is grounded; the needle head of the charging spring needle is the output end of the charging base.

[0011] As a preferred solution, the wireless microphone is provided with a matching component, and the wireless microphone receiving device further comprises a limiting component; the limiting component is arranged in the charging recess; when the wireless microphone is detachably connected with the charging recess, the limiting component and the matching component are matched.

[0012] As a preferred solution, the control circuit further comprises a wireless microphone signal input module, a wired microphone signal input module, a wireless microphone signal output module, a wired microphone signal output module and a microphone mixing selection switch module; an input end of the wired microphone signal input module serves as a wired microphone signal input interface; a power supply input end of the wired microphone signal input module is electrically connected with a power supply output end of the signal processing module; an output end of the wired microphone signal input module is electrically connected with a first signal input end of the signal processing module; an input end of the wired microphone signal output module is electrically connected with a first signal output end of the signal processing module; an output end of the wired microphone signal output module serves as a wired microphone audio signal output interface; an input end of the wireless microphone signal input module is in communication connection with the wireless microphone; a power supply input end of the wireless microphone signal input module is electrically connected with the power supply output end of the signal processing module; an output end of the wireless microphone signal input module is electrically connected with a second signal input end of the signal processing module; an input end of the wireless microphone signal output module is electrically connected with a second signal output end of the signal processing module; an output end of the wireless microphone signal output module serves as a wireless microphone audio signal output interface; an output end of the microphone mixing selection switch module is electrically connected with a switch signal input end of the signal processing module.

[0013] As a preferred solution, the wireless microphone receiving device further comprises a wired microphone; the wired microphone is arranged on the upper surface of the base; a signal output end of the wired microphone is electrically connected with the wired microphone signal input interface.

[0014] As a preferred scheme, the signal processing module comprises a BP1048 chip; a power supply input end of the wired microphone signal input module is electrically connected with a second pin of the BP1048 chip; an output end of the wired microphone signal input module is electrically connected with a seventh pin of the BP1048 chip; the output end of the wired microphone signal input module is electrically connected with a forty-first pin of the BP1048 chip; the output end of the wired microphone signal input module is electrically connected with a forty-third pin of the BP1048 chip; the output end of the wired microphone signal input module is electrically connected with a sixth pin of the BP1048 chip; the output end of the wired microphone signal input module is electrically connected with a forty-fifth pin of the BP1048 chip; an input end of the wired microphone signal output module is electrically connected with a forty-seventh pin of the BP1048 chip; a power supply input end of the wireless microphone signal input module is electrically connected with the second pin of the BP1048 chip; an output end of the wireless microphone signal input module is electrically connected with a third pin of the BP1048 chip; the output end of the wireless microphone signal input module is electrically connected with a twenty-second pin of the BP1048 chip; the output end of the wireless microphone signal input module is electrically connected with a thirty-fourth pin of the BP1048 chip; the output end of the wireless microphone signal input module is electrically connected with a forty-first pin of the BP1048 chip; the output end of the wireless microphone signal input module is electrically connected with a forty-second pin of the BP1048 chip; an input end of the wireless microphone signal output module is electrically connected with a forty-sixth pin of the BP1048 chip; a second output end of the wireless microphone charging module is electrically connected with the second pin of the BP1048 chip; and an output end of the microphone mix selection switch module is electrically connected with the sixth pin of the BP1048 chip.

[0015] As a preferred scheme, the wired microphone is a goose neck microphone; and as a preferred scheme, a type of the wireless microphone signal input module in communication connection with the wireless microphone is 2.4G wireless communication. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a structural schematic diagram of a wireless microphone receiving device provided by an embodiment of the present application;

[0017] Figure 2 Fig. 4 is a structural schematic diagram of a control circuit provided by an embodiment of the present application;

[0018] Figure 3 Fig. 6 is a connection schematic diagram of a wireless microphone charging module provided by an embodiment of the present application;

[0019] Figure 4 Fig. 8 is a structural schematic diagram of a charging base provided by an embodiment of the present application;

[0020] Figure 5 : a top view of the charging groove provided for the embodiment of the utility model;

[0021] Figure 6 : a circuit schematic diagram of the signal processing module provided for the embodiment of the utility model;

[0022] Figure 7 : a structure diagram of the wired microphone signal input module provided for the embodiment of the utility model;

[0023] Figure 8 : a structure diagram of the wireless microphone signal input module provided for the embodiment of the utility model;

[0024] Figure 9 : a structure diagram of the wireless microphone signal output module provided for the embodiment of the utility model;

[0025] Figure 10 : a structure diagram of the wired microphone signal output module provided for the embodiment of the utility model;

[0026] Wherein, 101: base; 102: wireless microphone; 103: charging groove; 104: wired microphone; 105: receiving device switch; 106: charging base; 107: limiting component; 201: signal processing module; 202: wireless microphone charging module; 203: wireless microphone signal input module; 204: wired microphone signal input module; 205: wireless microphone signal output module; 206: wired microphone signal output module; 207: microphone mix selection switch; 208: receiving device switch and display module; DC1: power adapter interface; LD5: fifth light emitting diode; R47: forty-seventh resistor; D1: first diode; D2: second diode; E2: second electrolytic capacitor; C3: third capacitor; C4: fourth capacitor; U1: voltage regulator; D3: third diode; L2: second inductor; E4: fourth electrolytic capacitor; C7: seventh capacitor; C6: sixth capacitor; C39: thirty-ninth capacitor; C40: fortieth capacitor; C41: forty-first capacitor; C19: nineteenth capacitor; C42: forty-second capacitor; C43: forty-third capacitor; L5: fifth inductor; C48: forty-eighth capacitor; C46: forty-sixth capacitor; C47: forty-seventh capacitor; CN1: five-pin socket; R2: second resistor; C2: second capacitor; L3: third inductor; R7: seventh resistor; R8: eighth resistor; C8: eighth capacitor; C31: thirty-first capacitor; Q6: sixth triode; R10: tenth resistor; C51: fifty-first capacitor; R24: twenty-fourth resistor; C18: eighteenth capacitor; R13: thirteenth resistor; R11: eleventh resistor; C10: tenth capacitor; IC1B: second operational amplifier; C65: sixty-fifth capacitor; C67: sixty-seventh capacitor; R72: seventy-second resistor; R73: seventy-third resistor; R74: seventy-fourth resistor; Q4: fourth triode; R6: sixth resistor; Q5: fifth triode; R4: fourth resistor; R5: fifth resistor; IC4: fourth chip; R55: fifty-fifth resistor; LD1: first light emitting diode; R64: sixty-fourth resistor; C34: thirty-fourth capacitor; R39: thirty-ninth resistor; C27: twenty-seventh capacitor; R34: thirty-fourth resistor; C15: fifteenth capacitor; R18: eighteenth resistor; R1: first resistor; C1: first capacitor; C16: sixteenth capacitor; R19: nineteenth resistor; IC1A: first operational amplifier; R3: third resistor; C5: fifth capacitor; C17: seventeenth capacitor; C26: twenty-sixth capacitor; R21: twenty-first resistor; R23: twenty-third resistor; R61: sixty-first resistor; IC2B: third operational amplifier; IC3B: fourth operational amplifier; IC5B: fifth operational amplifier; R20: twentieth resistor; C12: twelfth capacitor; R17: seventeenth resistor; C25: twenty-fifth capacitor; R22: twenty-second resistor; VR2: second sliding resistor;C36: thirty-sixth capacitor; R51: fifty-first resistor; R41: forty-first resistor; C32: thirty-second capacitor; C37: thirty-seventh capacitor; R52: fifty-second resistor; R50: fiftieth resistor; C33: thirty-third capacitor; C38: thirty-eighth capacitor; R53: fifty-third resistor; RO: first double Schottky diode; Q12: second double Schottky diode; MIC2: wireless audio output interface; IC2A: sixth operational amplifier; IC3A: seventh operational amplifier; IC5A: eighth operational amplifier; R15: fifteenth resistor; R12: twelfth resistor; C9: ninth capacitor; C55: fifty-fifth capacitor; R16: sixteenth resistor; VR1: first sliding resistor; C70: seventieth capacitor; R29: twenty-ninth resistor; R27: twenty-seventh resistor; C23: twenty-third capacitor; C71: seventy-first capacitor; R30: thirtieth resistor; R28: twenty-eighth resistor; C24: twenty-fourth capacitor; C72: seventy-second capacitor; R31: thirty-first resistor; LO: third double Schottky diode; Q13: fourth double Schottky diode; MIC3: wired audio output interface. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] With the continuous improvement of wireless microphones, the current wireless microphones are provided with corresponding charging interfaces and batteries, and the batteries are charged through the charging interfaces of the wireless microphones, so that the wireless microphones have strong portability. As a counterpart of the wireless microphone, the wireless microphone receiving device currently usually only provides wireless receiving function, and the charging of the wireless microphone needs additional charging wire and additional device for storage, which leads to low practicability of the wireless microphone receiving device.

[0029] It should be noted that the wireless microphone described in the embodiment is internally configured with a charging management chip ICP3181, which has a charging interface. Since the related configuration of the wireless microphone belongs to the routine configuration of those skilled in the art, it will not be described in detail here.

[0030] Embodiment one

[0031] Please refer to Figure 1 , a structure schematic view of a wireless microphone receiving device provided by the embodiments of the utility model. Please refer to Figure 2A structure schematic view of a control circuit is provided for the embodiment of the utility model.

[0032] As Figure 1 And Figure 2 The wireless microphone receiving device includes a base 101, a control circuit arranged inside the base and a wireless microphone 102, and the base is provided with a charging groove 103; the control circuit includes a wireless microphone charging module 202 and a signal processing module 201;

[0033] The input end of the wireless microphone charging module 202 serves as a power supply interface; the first output end of the wireless microphone charging module 202 serves as a wireless microphone charging port; the second output end of the wireless microphone charging module 202 is electrically connected with the power supply input end of the signal processing module 201; the wireless microphone 102 is communicatively connected with the first signal input end of the control circuit; the wireless microphone charging port is arranged in the charging groove 103; when the wireless microphone 102 is detachably connected with the charging groove 103, the wireless microphone 102 is electrically connected with the wireless microphone charging port.

[0034] In the embodiment, please refer to Figure 3 A connection schematic view of a wireless microphone charging module is provided for the embodiment of the utility model. As Figure 3 The wireless microphone charging module 202 includes a power adapter interface DC1, a fifth light emitting diode LD5, a forty-seventh resistor R47, a first diode D1, a second diode D2, a second electrolytic capacitor E2, a third capacitor C3, a fourth capacitor C4, a voltage reducing stabilizer U1, a third diode D3, a second inductor L2, a fourth electrolytic capacitor E4, a seventh capacitor C7 and a sixth capacitor C6;

[0035] The first output port of the power adapter interface DC1 is electrically connected with the first end of the forty-seventh resistor R47; the second output port of the power adapter interface DC1 is grounded; the second end of the forty-seventh resistor R47 is electrically connected with the first end of the fifth light emitting diode LD5; the second end of the fifth light emitting diode LD5 is grounded; the first end of the first diode D1 is electrically connected with the first output port of the power adapter interface DC1; the second end of the first diode D1 is electrically connected with the first end of the second diode D2; the second end of the second diode D2 is grounded; the first end of the second electrolytic capacitor E2, the first end of the third capacitor C3 and the first end of the fourth capacitor C4 are respectively electrically connected with the second end of the first diode D1; the second end of the second electrolytic capacitor E2, the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are grounded; the first end of the voltage reducing stabilizer U1 is electrically connected with the second end of the first diode D1; the third end and the fifth end of the voltage reducing stabilizer U1 are grounded; the second end of the voltage reducing stabilizer U1 is electrically connected with the first end of the third diode D3; the fourth end of the voltage reducing stabilizer U1 is electrically connected with the first end of the fourth electrolytic capacitor E4; the second end of the third diode D3 is grounded; the second end of the fourth electrolytic capacitor E4 is grounded; the first end of the second inductor L2 is electrically connected with the second end of the voltage reducing stabilizer U1; the second end of the second inductor L2 is electrically connected with the first end of the fourth electrolytic capacitor E4; the first end of the seventh capacitor C7 is electrically connected with the second end of the second inductor L2; the first end of the sixth capacitor C6 is electrically connected with the second end of the second inductor L2; the second end of the seventh capacitor C7 and the second end of the sixth capacitor C6 are grounded; the input end of the power adapter interface DC1 is the input end of the wireless microphone charging module 202; the first end of the sixth capacitor C6 is the first output end of the wireless microphone charging module 202; the first end of the sixth capacitor C6 is the second output end of the wireless microphone charging module 202.

[0036] It should be noted that the voltage reducing stabilizer U1 in the embodiment is LM2575, the first end of the voltage reducing stabilizer U1 is Vi end, the second end is Vo end, the third end is GND end, the fourth end is FB end, and the fifth end is O / F end. The power adapter interface DC1 is DC seat.

[0037] The principle of the wireless microphone charging module is that the input end of the power adapter interface DC1 receives 12V direct current voltage as a power supply interface; the fifth light emitting diode LD5 and the forty-seventh resistor R47 constitute a power-on indication unit, and the fifth light emitting diode LD5 is always on when the wireless microphone charging module is powered on; the first diode D1 is used as an anti-reverse insertion protection diode to prevent circuit burning caused by reverse connection of the power supply interface; the second diode D2 is a TVS tube, and when the voltage of the wireless microphone charging module exceeds the suppression value of the second diode D2, the second end of the second diode D2 will be grounded; the second electrolytic capacitor E2, the third capacitor C3 and the fourth capacitor C4 are filter capacitors for filtering noise in the 12V direct current voltage; the third diode D3 is a Schottky diode, and the second inductor L2 is a power inductor, and the 12V direct current voltage is stabilized to 5V direct current voltage through the voltage stabilizer U1, the third diode D3 and the second inductor L2; the fourth electrolytic capacitor E4, the seventh capacitor C7 and the sixth capacitor C6 are filter capacitors for filtering noise in the 5V direct current voltage.

[0038] The power adapter interface, diodes, resistors, capacitors and voltage stabilizers are connected to realize voltage conversion and filtering, so that the charging groove can charge the wireless microphone on the basis of storing the wireless microphone, the inconvenience of charging and storing the wireless microphone by an additional charging line and a storage device in the prior art is avoided, the storage and charging convenience of the wireless microphone is improved, and the practicality of the wireless microphone receiving device is improved.

[0039] In the embodiment, please refer to Figure 4 , which is a structural schematic view of the charging base provided in the embodiment of the utility model. Please refer to Figure 5 , which is a top view of the charging groove provided in the embodiment of the utility model.

[0040] As shown in Figure 4 and Figure 5 , the wireless microphone receiving device further comprises a charging base 106; the charging base 106 is arranged in the charging groove 103; the input end of the charging base is electrically connected with the first end of the sixth capacitor C6; when the wireless microphone 102 is detachably connected with the charging groove 103, the wireless microphone 102 is electrically connected with the output end of the charging base 106.

[0041] In the embodiment, as shown in Figure 4As shown, the charging base 106 comprises: a current-limiting resistor R44 and a charging spring needle CN4; the first end of the current-limiting resistor R44 is electrically connected with the first end of the sixth capacitor C6; the first input end of the needle seat of the charging spring needle CN4 is electrically connected with the second end of the current-limiting resistor; the second input end of the needle seat of the charging spring needle CN4 is grounded; the needle head of the charging spring needle CN4 serves as the output end of the charging base 106.

[0042] The working principle of the charging base is specifically as follows: the current-limiting resistor R44 and the sixth capacitor of the wireless microphone charging module are electrically connected, so that the current output by the wireless microphone charging module is limited, thereby avoiding too large current when charging the wireless microphone; when the wireless microphone 102 is detachably connected with the charging recess 103, the needle head of the charging spring needle CN4 is electrically connected with the charging interface of the wireless microphone, so as to provide 5V charging voltage for the wireless microphone.

[0043] It should be noted that the charging interface provided on the wireless microphone is a common configuration of those skilled in the art, and therefore the charging interface will not be described in detail here.

[0044] The embodiment realizes circuit current-limiting protection through the current-limiting resistor, and further realizes charging protection of the wireless microphone by the charging recess; the charging spring needle is connected with the charging port of the wireless microphone, so that the charging efficiency of the charging recess is higher, the charging efficiency of the wireless microphone receiving device on the wireless microphone is improved, and the practicality of the wireless microphone receiving device is improved.

[0045] In the embodiment, as shown in the figure, Figure 5 The wireless microphone receiving device further comprises a limiting component 107; the limiting component 107 is arranged in the charging recess 103; when the wireless microphone 102 is detachably connected with the charging recess 103, the limiting component 107 and the matching component are fitted. In an optional embodiment, the limiting component 107 can be a convex cylinder, and the height of the convex cylinder is set to 6mm.

[0046] The working principle of the matching component of the embodiment is specifically as follows: by arranging the limiting component, when the wireless microphone is inserted into the charging recess of the wireless microphone receiving device in reverse, the limiting component and the matching component of the wireless microphone cannot be fitted, so the wireless microphone cannot be completely inserted into the charging recess, and at this time, the needle head of the charging spring needle cannot contact the charging interface of the wireless microphone, thereby avoiding burning of the wireless microphone during charging. When the wireless microphone is inserted into the charging recess of the wireless microphone receiving device in the right direction, the limiting component and the matching component are fitted, and the needle head of the charging spring needle is electrically connected with the charging interface of the wireless microphone.

[0047] The embodiment sets the limiting component in the charging groove, uses the limiting component as the fixing structure of the charging groove to improve the stability of the wireless microphone placed in the charging groove, uses the limiting component as the anti-reverse insertion structure of the charging groove to avoid the burning of the wireless microphone caused by the reverse insertion of the wireless microphone, improves the charging safety of the wireless microphone receiving device, and thus improves the practicability of the wireless microphone receiving device.

[0048] It should be noted that the wireless microphone is a handheld portable mobile device, and is usually powered by a lithium battery. Due to the battery capacity, the use time is limited, and when the battery is exhausted, the wireless microphone cannot be used, which causes inconvenience in the use of the wireless microphone. Therefore, the embodiment further sets a wired microphone on the wireless microphone receiving device, and sets a wired microphone signal input module and a wired microphone signal output module in the control circuit, so as to solve this defect. The specific content is as follows.

[0049] In the embodiment, as shown in Figure 2 The control circuit further includes a wireless microphone signal input module 203, a wired microphone signal input module 204, a wireless microphone signal output module 205, a wired microphone signal output module 206, and a microphone mix selection switch module 207. The input end of the wired microphone signal input module 204 is used as a wired microphone signal input interface. The power supply input end of the wired microphone signal input module 204 is electrically connected with the power supply output end of the signal processing module 201. The output end of the wired microphone signal input module 204 is electrically connected with the first signal input end of the signal processing module 201. The input end of the wired microphone signal output module 206 is electrically connected with the first signal output end of the signal processing module 201. The output end of the wired microphone signal output module 206 is used as a wired microphone audio signal output interface. The input end of the wireless microphone signal input module 203 is in communication connection with the wireless microphone 102. The power supply input end of the wireless microphone signal input module 203 is electrically connected with the power supply output end of the signal processing module 201. The output end of the wireless microphone signal input module 203 is electrically connected with the second signal input end of the signal processing module 201. The input end of the wireless microphone signal output module 205 is electrically connected with the second signal output end of the signal processing module 201. The output end of the wireless microphone signal output module 205 is used as a wireless microphone audio signal output interface. The output end of the microphone mix selection switch module 207 is electrically connected with the switch signal input end of the signal processing module 201.

[0050] In the embodiment, the wireless microphone receiving device further includes a wired microphone 104. The wired microphone 104 is arranged on the upper surface of the base 101. The signal output end of the wired microphone 104 is electrically connected with the wired microphone signal input interface.

[0051] The embodiment provides multiple microphone choices for the user by arranging the wired microphone on the wireless microphone receiving device, avoids inconvenience caused by sudden damage of the wireless microphone, and improves the practicability of the wireless microphone receiving device.

[0052] In the embodiment, the signal processing module 201 comprises a BP1048 chip, a power supply input end of the wired microphone signal input module 204 is electrically connected with a second pin of the BP1048 chip, an output end of the wired microphone signal input module 204 is electrically connected with a seventh pin of the BP1048 chip, an output end of the wired microphone signal input module 204 is electrically connected with a forty-first pin of the BP1048 chip, an output end of the wired microphone signal input module 204 is electrically connected with a forty-third pin of the BP1048 chip, an output end of the wired microphone signal input module 204 is electrically connected with a sixth pin of the BP1048 chip, an output end of the wired microphone signal input module 204 is electrically connected with a forty-fifth pin of the BP1048 chip, an input end of the wired microphone signal output module 206 is electrically connected with a forty-seventh pin of the BP1048 chip, a power supply input end of the wireless microphone signal input module 203 is electrically connected with the second pin of the BP1048 chip, an output end of the wireless microphone signal input module 203 is electrically connected with a third pin of the BP1048 chip, an output end of the wireless microphone signal input module 203 is electrically connected with a twenty-second pin of the BP1048 chip, an output end of the wireless microphone signal input module 203 is electrically connected with a thirty-fourth pin of the BP1048 chip, an output end of the wireless microphone signal input module 203 is electrically connected with a fortyth pin of the BP1048 chip, an output end of the wireless microphone signal input module 203 is electrically connected with a forty-second pin of the BP1048 chip, an input end of the wireless microphone signal output module 205 is electrically connected with a forty-sixth pin of the BP1048 chip, a second output end of the wireless microphone charging module 202 is electrically connected with the second pin of the BP1048 chip, and an output end of the microphone mix selection switch module 207 is electrically connected with the sixth pin of the BP1048 chip.

[0053] In an optional embodiment, referring to Figure 6 The utility model provides a kind of circuit schematic diagram of signal processing module for the embodiment of the utility model. As shown in Figure 6As shown, the signal processing module 201 comprises: a BP1048 chip, a thirty-ninth capacitor C39, a fortieth capacitor C40, a forty-first capacitor C41, a nineteenth capacitor C19, a forty-second capacitor C42, a forty-third capacitor C43, a fifth inductor L5, a forty-eighth capacitor C48, a forty-sixth capacitor C46, and a forty-seventh capacitor C47.

[0054] The second end of the fifth inductor L5 is electrically connected with the second pin of the BP1048 chip; the first end of the fifth inductor L5 is electrically connected with the power supply input end of the wired microphone signal input module 204; the first end of the fifth inductor L5 is electrically connected with the power supply input end of the wireless microphone signal input module 203; the first end of the fifth inductor L5 is electrically connected with the second end of the forty-eighth capacitor C48; the second end of the forty-eighth capacitor C48 is electrically connected with the fourth pin of the BP1048 chip; the second end of the forty-eighth capacitor C48 is grounded; the second end of the fifth inductor L5 is electrically connected with the second end of the forty-sixth capacitor C46; the second end of the forty-sixth capacitor C46 is electrically connected with the fourth pin of the BP1048 chip; the second end of the forty-sixth capacitor C46 is grounded; the second end of the thirty-ninth capacitor C39 is electrically connected with the forty-seventh pin of the BP1048 chip; the first end of the thirty-ninth capacitor C39 is electrically connected with the input end of the wired microphone signal output module 206; the second end of the fortieth capacitor C40 is electrically connected with the forty-sixth pin of the BP1048 chip; the first end of the fortieth capacitor C40 is electrically connected with the input end of the wireless microphone signal output module 205; the second end of the forty-first capacitor C41 is electrically connected with the forty-third pin of the BP1048 chip; the first end of the forty-first capacitor C41 is electrically connected with the output end of the wired microphone signal input module 204; the second end of the nineteenth capacitor C19 is electrically connected with the forty-second pin of the BP1048 chip; the first end of the nineteenth capacitor C19 is electrically connected with the output end of the wireless microphone signal input module 203; the second end of the forty-second capacitor C42 is electrically connected with the forty-first pin of the BP1048 chip; the first end of the forty-second capacitor C42 is electrically connected with the output end of the wired microphone signal input module 204; the second end of the forty-seventh capacitor C47 is electrically connected with the third pin of the BP1048 chip; the first end of the forty-seventh capacitor C47 is electrically connected with the output end of the wireless microphone signal input module 203; the second end of the forty-third capacitor C43 is electrically connected with the fortieth pin of the BP1048 chip; the first end of the forty-third capacitor C43 is electrically connected with the output end of the wireless microphone signal input module 203.

[0055] In an optional embodiment, referring to Figure 7A structure diagram of a wired microphone signal input module provided by the embodiment of the utility model, as shown in Figure 7 The wired microphone signal input module 204 includes: a five-pin socket CN1, a second resistor R2, a second capacitor C2, a third inductor L3, a seventh resistor R7, an eighth resistor R8, an eighth capacitor C8, a thirty-first capacitor C31, a sixth triode Q6, a tenth resistor R10, a fifty-first capacitor C51, a twenty-fourth resistor R24, an eighteenth capacitor C18, a thirteenth resistor R13, an eleventh resistor R11, a tenth capacitor C10, a second operational amplifier IC1B, a sixty-fifth capacitor C65, a sixty-seventh capacitor C67, a seventy-second resistor R72, a seventy-third resistor R73, a seventy-fourth resistor R74, a fourth triode Q4, a sixth resistor R6, a fifth triode Q5, a fourth resistor R4, and a fifth resistor R5.

[0056] The fifth output end of the five-position socket CN1 is electrically connected with the third end of the fourth triode Q4; the fourth output end of the five-position socket CN1 is empty; the third output end of the five-position socket CN1 is electrically connected with the first end of the second resistor; the second output end of the five-position socket CN1 is electrically connected with the forty-fifth pin of the BP1048 chip; the first output end of the five-position socket CN1 is electrically connected with the first end of the fifty-first capacitor C51; the second end of the fourth triode Q4 is grounded; the first end of the fourth triode Q4 is electrically connected with the first end of the sixth resistor R6; the second end of the sixth resistor R6 is electrically connected with the third end of the fifth triode Q5; the second end of the fifth triode Q5 is electrically connected with the first end of the fourth resistor R4; the first end of the fifth triode Q5 is electrically connected with the first end of the fifth resistor R5; the second end of the fourth resistor R4 is electrically connected with the first end of the fifth resistor R5; the second end of the fifth resistor is electrically connected with the seventh pin of the BP1048 chip; the first end of the second capacitor C2 is electrically connected with the first end of the second resistor R2; the second end of the second capacitor C2 is grounded; the second end of the second resistor R2 is electrically connected with the first end of the third inductor L3; the second end of the third inductor L3 is used as the power supply input end of the wired microphone signal input module 204, and is electrically connected with the first end of the fifth inductor L5; the first end of the eighth capacitor C8 is electrically connected with the first end of the third inductor L3; the second end of the eighth capacitor C8 is grounded; the first end of the thirty-first capacitor C31 is electrically connected with the first end of the third inductor L3; the second end of the thirty-first capacitor C31 is grounded; the first end of the seventh resistor R7 is electrically connected with the first end of the third inductor L3; the second end of the seventh resistor R7 is electrically connected with the first end of the eighth resistor R8; the second end of the eighth resistor R8 is electrically connected with the sixth pin of the BP1048 chip; the first end of the sixth triode Q6 is electrically connected with the first end of the eighth resistor R8; the third end of the sixth triode Q6 is electrically connected with the first end of the third inductor L3; the second end of the sixth triode Q6 is electrically connected with the first end of the tenth resistor R10; the second end of the tenth resistor R10 is electrically connected with the first end of the fifty-first capacitor C51; the second end of the fifty-first capacitor C51 is electrically connected with the first end of the twenty-fourth resistor R24; the second end of the twenty-fourth resistor R24 is grounded; the first end of the eighteenth capacitor C18 is electrically connected with the second end of the fifty-first capacitor C51; the second end of the eighteenth capacitor C18 is grounded; the first end of the thirteenth resistor R13 is electrically connected with the second end of the fifty-first capacitor C51; the second end of the thirteenth resistor R13 is electrically connected with the inverting input end of the second operational amplifier IC1B; the noninverting input end of the second operational amplifier IC1B is connected with a reference voltage;The output terminal of the second operational amplifier IC1B is electrically connected to the first terminal of the sixty-fifth capacitor C65; the first terminal of the eleventh resistor R11 is electrically connected to the second terminal of the thirteenth resistor R13; the second terminal of the eleventh resistor R11 is electrically connected to the first terminal of the sixty-fifth capacitor C65; the first terminal of the tenth capacitor C10 is electrically connected to the second terminal of the thirteenth resistor R13; the second terminal of the tenth capacitor C10 is electrically connected to the first terminal of the sixty-fifth capacitor C65; the second terminal of the sixty-fifth capacitor C65 is electrically connected to the first terminal of the seventy-second resistor R72. The following electrical connections are made: the second terminal of the seventy-second resistor R72 is electrically connected to the first terminal of the forty-second capacitor C42; the first terminal of the sixty-seventh capacitor C67 is electrically connected to the first terminal of the sixty-fifth capacitor C65; the second terminal of the sixty-seventh capacitor C67 is electrically connected to the first terminal of the seventy-third resistor R73; the second terminal of the seventy-third resistor R73 is electrically connected to the first terminal of the forty-first capacitor C41; the first terminal of the seventy-fourth resistor R74 is grounded; and the second terminal of the seventy-fourth resistor R74 is electrically connected to the second terminal of the seventy-third resistor R73.

[0057] The working principle of the wired microphone signal input module in this embodiment is as follows: the wired signal output from the wired microphone is received through the socket CN1, the wired signal is amplified by the second operational amplifier ICIB, and then transmitted to the BP1048 chip through the eighth resistor R8, the seventy-second resistor R72, the seventy-third resistor R73 and the fifth resistor R5 respectively.

[0058] It should be noted that in this embodiment, the wired signal output from the wired microphone is received via a socket, which is a common configuration for those skilled in the art, and therefore will not be described in detail here. The second operational amplifier IC1B, model NE5532, is used to perform operational amplification on the signal input from the wired microphone.

[0059] In one alternative embodiment, please refer to Figure 8 The present invention provides a structural diagram of a wireless microphone signal input module, as shown in the embodiment. Figure 8 As shown, the wireless microphone signal input module 203 includes a fourth chip IC4, a fifty-fifth resistor R55, a first light-emitting diode LD1, a sixty-fourth resistor R64, a thirty-fourth capacitor C34, a thirty-ninth resistor R39, a twenty-seventh capacitor C27, a thirty-fourth resistor R34, a fifteenth capacitor C15, an eighteenth resistor R18, a first resistor R1, a first capacitor C1, a sixteenth capacitor C16, a nineteenth resistor R19, a first operational amplifier IC1A, a third resistor R3, a fifth capacitor C5, a seventeenth capacitor C17, a twenty-sixth capacitor C26, a twenty-first resistor R21, a twenty-third resistor R23, and a sixty-first resistor R61.

[0060] The first end of the first light emitting diode LD1 is grounded, and the second end of the first light emitting diode LD1 is electrically connected with the first end of the fifty-fifth resistor R55; the second end of the fifty-fifth resistor R55 is electrically connected with the second end of the sixty-fourth resistor R64; the first end of the sixty-fourth resistor R64 is electrically connected with the thirty-fourth pin of the BP1048 chip; the second end of the sixty-fourth resistor R64 is electrically connected with the eleventh pin of the fourth chip IC4; the first end of the thirty-ninth resistor R39 is electrically connected with the twelfth pin of the fourth chip IC4; the second end of the thirty-ninth resistor R39 is electrically connected with the twenty-second pin of the BP1048 chip; the first end of the thirty-fourth capacitor C34 is electrically connected with the sixteenth pin of the fourth chip IC4; the first end of the thirty-fourth capacitor C34 is used as the power supply input end of the wireless microphone signal input module 203 and is electrically connected with the first end of the fifth inductor L5; the second end of the thirty-fourth capacitor C34 is grounded; the eighth pin of the fourth chip IC4 is electrically connected with the first end of the forty-seventh capacitor C47; the first end of the twenty-seventh capacitor C27 is electrically connected with the fourth pin of the fourth chip IC4; the second end of the twenty-seventh capacitor C27 is electrically connected with the first end of the thirty-fourth resistor R34; the second end of the thirty-fourth resistor R34 is electrically connected with the second end of the eighteenth resistor R18; the first end of the eighteenth resistor R18 is electrically connected with the second end of the fifteenth capacitor C15; the first end of the fifteenth capacitor C15 is electrically connected with the second pin of the fourth chip IC4; the first end of the first resistor R1 is grounded; the second end of the first resistor R1 is electrically connected with the second end of the eighteenth resistor R18; the first end of the first capacitor C1 is grounded; the second end of the first capacitor C1 is electrically connected with the second end of the eighteenth resistor R18; the second end of the eighteenth resistor R18 is electrically connected with the first end of the sixteenth capacitor C16; the second end of the sixteenth capacitor C16 is electrically connected with the first end of the nineteenth resistor R19; the second end of the nineteenth resistor R19 is electrically connected with the inverting input end of the first operational amplifier IC1A; the non-inverting input end of the first operational amplifier IC1A is connected with a reference voltage; the first end of the third resistor R3 is electrically connected with the inverting input end of the first operational amplifier IC1A; the second end of the third resistor R3 is electrically connected with the output end of the first operational amplifier IC1A; the first end of the fifth capacitor C5 is electrically connected with the inverting input end of the first operational amplifier IC1A; the second end of the fifth capacitor C5 is electrically connected with the output end of the first operational amplifier IC1A; the output end of the first operational amplifier IC1A is electrically connected with the first end of the seventeenth capacitor C17; the second end of the seventeenth capacitor C17 is electrically connected with the first end of the twenty-first resistor R21;The second terminal of the 21st resistor R21 is electrically connected to the first terminal of the 43rd capacitor C43; the first terminal of the 26th capacitor C26 is electrically connected to the output terminal of the first operational amplifier IC1A; the second terminal of the 26th capacitor C26 is electrically connected to the first terminal of the 23rd resistor R23; the second terminal of the 23rd resistor R23 is electrically connected to the first terminal of the 19th capacitor C19; the first terminal of the 61st resistor R61 is grounded; the second terminal of the 61st resistor R61 is electrically connected to the second terminal of the 23rd resistor R23.

[0061] The working principle of the wireless microphone signal input module in this embodiment is as follows: it communicates with the wireless microphone through the fourth chip IC4, receives and processes the wireless signal from the wireless microphone, and then amplifies the wireless signal through the first operational amplifier IC1A. After that, it transmits the signal to the BP1048 chip through the sixty-fourth resistor R64, the twenty-first resistor R21, and the twenty-third resistor R23, respectively.

[0062] It should be noted that the fourth chip IC4 is model AW2908, which is used to receive and process wireless signals; the first operational amplifier IC1A is model NE5532, which is used to amplify wireless signals.

[0063] In one alternative embodiment, please refer to Figure 9 The present invention provides a structural diagram of a wireless microphone signal output module, as shown in the embodiment. Figure 9 As shown, the wireless microphone signal output module 205 includes: a third operational amplifier IC2B, a fourth operational amplifier IC3B, a fifth operational amplifier IC5B, a twentieth resistor R20, a twelfth capacitor C12, a seventeenth resistor R17, a twenty-fifth capacitor C25, a twenty-second resistor R22, a second sliding resistor VR2, a thirty-sixth capacitor C36, a fifty-first resistor R51, a forty-first resistor R41, a thirty-second capacitor C32, a thirty-seventh capacitor C37, a fifty-second resistor R52, a fiftieth resistor R50, a thirty-third capacitor C33, a thirty-eighth capacitor C38, a fifty-third resistor R53, a first dual Schottky diode RO, a second dual Schottky diode Q12, and a wireless audio output interface MIC2;

[0064] The first end of the twentieth resistor R20 is electrically connected with the first end of the fortieth capacitor C40; the second end of the twentieth resistor R20 is electrically connected with the inverting input end of the third operational amplifier IC2B; the noninverting input end of the third operational amplifier IC2B is connected with a reference voltage; the first end of the seventeenth resistor R17 is electrically connected with the second end of the twentieth resistor R20; the second end of the seventeenth resistor R17 is electrically connected with the output end of the third operational amplifier IC2B; the first end of the twelfth capacitor C12 is electrically connected with the second end of the twentieth resistor R20; the second end of the twelfth capacitor C12 is electrically connected with the output end of the third operational amplifier IC2B; the output end of the third operational amplifier IC2B is electrically connected with the first end of the twenty-fifth capacitor C25; the second end of the twenty-fifth capacitor C25 is electrically connected with the first end of the twenty-second resistor R22; the second end of the twenty-second resistor R22 is electrically connected with the first end of the second sliding resistor VR2; the second end of the second sliding resistor VR2 is grounded; the sliding end of the second sliding resistor VR2 is electrically connected with the first end of the thirty-sixth capacitor C36; the second end of the thirty-sixth capacitor C36 is electrically connected with the first end of the fifty-first resistor R51; the second end of the fifty-first resistor R51 is electrically connected with the inverting input end of the fourth operational amplifier IC3B; the noninverting input end of the fourth operational amplifier IC3B is connected with a reference voltage; the first end of the forty-first resistor R41 is electrically connected with the second end of the fifty-first resistor R51; the second end of the forty-first resistor R41 is electrically connected with the output end of the fourth operational amplifier IC3B; the first end of the thirty-second capacitor C32 is electrically connected with the second end of the fifty-first resistor R51; the second end of the thirty-second capacitor C32 is electrically connected with the output end of the fourth operational amplifier IC3B; the output end of the fourth operational amplifier IC3B is electrically connected with the first end of the thirty-seventh capacitor C37; the second end of the thirty-seventh capacitor C37 is electrically connected with the first end of the fifty-second resistor R52; the second end of the fifty-second resistor R52 is electrically connected with the inverting input end of the fifth operational amplifier IC5B; the noninverting input end of the fifth operational amplifier IC5B is connected with a reference voltage; the first end of the fiftieth resistor R50 is electrically connected with the second end of the fifty-second resistor R52; the second end of the fiftieth resistor R50 is electrically connected with the output end of the fifth operational amplifier IC5B; the first end of the thirty-third capacitor C33 is electrically connected with the second end of the fifty-second resistor R52; the second end of the thirty-third capacitor C33 is electrically connected with the output end of the fifth operational amplifier IC5B; the output end of the fifth operational amplifier IC5B is electrically connected with the first end of the thirty-eighth capacitor C38; the second end of the thirty-eighth capacitor C38 is electrically connected with the first end of the fifty-third resistor R53;The second terminal of the 53rd resistor R53 is electrically connected to the first terminal of the first dual Schottky diode RO; the second terminal of the first dual Schottky diode RO is grounded; the second terminal of the 53rd resistor R53 is electrically connected to the first terminal of the second dual Schottky diode Q12; the second terminal of the second dual Schottky diode Q12 is grounded; the first terminal of the wireless audio output interface MIC2 is grounded; the third terminal of the wireless audio output interface MIC2 is electrically connected to the second terminal of the 53rd resistor R53; the second and third terminals of the wireless audio output interface MIC2 are electrically connected.

[0065] It should be noted that the third operational amplifier IC2B, the fourth operational amplifier IC3B, and the fifth operational amplifier IC5B in the wireless microphone signal output module 205 are all model NE5532, and are used to perform operational amplification on the audio signal output by the chip BP1048; the wireless audio output interface MIC2 is a microphone interface socket used to connect to audio playback devices.

[0066] The working principle of the wireless microphone signal output module 205 in this embodiment is as follows: the audio signal output by the BP1048 chip is amplified by the third operational amplifier IC2B, the fourth operational amplifier IC3B and the fifth operational amplifier IC5B, and then output to the audio playback device through the wireless audio output interface MIC2.

[0067] In one alternative embodiment, please refer to Figure 10 The present invention provides a structural diagram of a wired microphone signal output module, as shown in the embodiment. Figure 10 As shown, the wired microphone signal output module 206 includes: a sixth operational amplifier IC2A, a seventh operational amplifier IC3A, an eighth operational amplifier IC5A, a fifteenth resistor R15, a twelfth resistor R12, a ninth capacitor C9, a fifty-fifth capacitor C55, a sixteenth resistor R16, a first sliding resistor VR1, a seventieth capacitor C70, a twenty-ninth resistor R29, a twenty-seventh resistor R27, a twenty-third capacitor C23, a seventy-first capacitor C71, a thirtieth resistor R30, a twenty-eighth resistor R28, a twenty-fourth capacitor C24, a seventy-second capacitor C72, a thirty-first resistor R31, a third dual Schottky diode LO, a fourth dual Schottky diode Q13, and a wired audio output interface MIC3;

[0068] The first end of the 15th resistor R15 is electrically connected with the first end of the 39th capacitor C39; the second end of the 15th resistor R15 is electrically connected with the inverting input end of the 6th operational amplifier IC2A; the noninverting input end of the 6th operational amplifier IC2A is connected with a reference voltage; the first end of the 12th resistor R12 is electrically connected with the second end of the 15th resistor R15; the second end of the 12th resistor R12 is electrically connected with the output end of the 6th operational amplifier IC2A; the first end of the 9th capacitor C9 is electrically connected with the second end of the 15th resistor R15; the second end of the 9th capacitor C9 is electrically connected with the output end of the 6th operational amplifier IC2A; the output end of the 6th operational amplifier IC2A is electrically connected with the first end of the 55th capacitor C55; the second end of the 55th capacitor C55 is electrically connected with the first end of the 16th resistor R16; the second end of the 16th resistor R16 is electrically connected with the first end of the first sliding resistor VR1; the second end of the first sliding resistor VR1 is grounded; the sliding end of the first sliding resistor VR1 is electrically connected with the first end of the 70th capacitor C70; the second end of the 70th capacitor C70 is electrically connected with the first end of the 29th resistor R29; the second end of the 29th resistor R29 is electrically connected with the inverting input end of the 7th operational amplifier IC3A; the noninverting input end of the 7th operational amplifier IC3A is connected with a reference voltage; the first end of the 27th resistor R27 is electrically connected with the second end of the 29th resistor R29; the second end of the 27th resistor R27 is electrically connected with the output end of the 7th operational amplifier IC3A; the first end of the 23rd capacitor C23 is electrically connected with the second end of the 29th resistor R29; the second end of the 23rd capacitor C23 is electrically connected with the output end of the 7th operational amplifier IC3A; the output end of the 7th operational amplifier IC3A is electrically connected with the first end of the 71st capacitor C71; the second end of the 71st capacitor C71 is electrically connected with the first end of the 30th resistor R30; the second end of the 30th resistor R30 is electrically connected with the inverting input end of the 8th operational amplifier IC5A; the noninverting input end of the 8th operational amplifier IC5A is connected with a reference voltage; the first end of the 28th resistor R28 is electrically connected with the second end of the 30th resistor R30; the second end of the 28th resistor R28 is electrically connected with the output end of the 8th operational amplifier IC5A; the first end of the 24th capacitor C24 is electrically connected with the second end of the 30th resistor R30; the second end of the 24th capacitor C24 is electrically connected with the output end of the 8th operational amplifier IC5A; the output end of the 8th operational amplifier IC5A is electrically connected with the first end of the 72nd capacitor C72; the second end of the 72nd capacitor C72 is electrically connected with the first end of the 31st resistor R31;The second end of the thirty-first resistor R31 is electrically connected with the first end of the third double Schottky diode LO; the second end of the third double Schottky diode LO is grounded; the second end of the thirty-first resistor R31 is electrically connected with the first end of the fourth double Schottky diode Q13; the second end of the fourth double Schottky diode Q13 is grounded; the first end of the wired audio output interface MIC3 is grounded; the third end of the wired audio output interface MIC3 is electrically connected with the second end of the thirty-first resistor R31; and the second end of the wired audio output interface MIC3 is electrically connected with the third end.

[0069] It should be noted that the models of the sixth operational amplifier IC2A, the seventh operational amplifier IC3A and the eighth operational amplifier IC5A are all NE5532, which are used for operation amplification of the audio signals output by the chip BP1048. The wired audio output interface MIC3 is a microphone interface seat, which is used for connecting an audio playing device.

[0070] The working principle of the wired microphone signal output module 206 of the embodiment is that the audio signals output by the BP1048 chip are operation amplified by the sixth operational amplifier IC2A, the seventh operational amplifier IC3A and the eighth operational amplifier IC5A, and then output to an audio playing device through the wired audio output interface MIC3.

[0071] It should be noted that the audio playing device includes a sound box, an MP3 player and the like. The audio output interface is connected with the audio playing device, so that the audio playing device can play audio, which is a routine operation of a person skilled in the art and will not be described in detail here.

[0072] It should be noted that the same-phase input ends of the second operational amplifier IC1B, the first operational amplifier IC1A, the third operational amplifier IC2B, the fourth operational amplifier IC3B, the fifth operational amplifier IC5B, the sixth operational amplifier IC2A, the seventh operational amplifier IC3A and the eighth operational amplifier IC5A are connected with a reference voltage, which is a routine means of a person skilled in the art and will not be described in detail here.

[0073] In an optional embodiment, the microphone mixing selection switch module includes a waveband switch, which includes a first selection end, a second selection end and a common end; the common end of the waveband switch is electrically connected with the sixth pin of the BP1048 chip; the first selection end of the waveband switch is used as a normal audio output selection end; and the second selection end of the waveband switch is used as a mixed audio output selection end.

[0074] The working principle of the microphone mixing selection switch module of the embodiment is as follows: when the wave band switch is dialled to the normal audio output selection end, the BP1048 chip detects that the sixth pin is at a high level, and then controls the audio signals of the wireless microphone and the wired microphone to be output through the first audio signal output interface MIC2 and the second audio signal output interface MIC3 respectively, that is, the audio signals of the wireless microphone and the wired microphone are not mixed; when the wave band switch is dialled to the mixed audio output selection end, the BP1048 chip detects that the sixth pin is at a low level, and then controls the audio signal of the wired microphone to be output through the second audio signal output interface MIC3, and mixes the audio signals of the wireless microphone and the wired microphone, and outputs the mixed audio signal through the first audio signal output interface MIC2.

[0075] In an optional embodiment, the second end of the sixth capacitor C6 is electrically connected with the fifth inductor L5, so that the wireless microphone charging module supplies power for the BP1048 chip.

[0076] The wireless microphone signal input module, the wired microphone signal input module, the wireless microphone signal output module, the wired microphone signal output module and the microphone mixing selection switch module are arranged in the control circuit, and are connected with the pins of the chip in the signal processing module, so that the signal processing module is used to realize the conversion of signals of different types of microphones, and the output audio of the wireless microphone receiving device is mixed and controlled through the microphone mixing selection switch, so that the different microphone output requirements of the user are met, and the practicability of the wireless microphone receiving device is improved.

[0077] In an optional embodiment, the control circuit further comprises a receiving device switch and display module 208, and the wireless microphone receiving device further comprises a receiving device switch 105; the receiving device switch 105 is arranged on the upper surface of the base 101; the output end of the receiving device switch 105 is electrically connected with the input end of the receiving device switch and display module 208; the output end of the receiving device switch 105 is electrically connected with the input end of the microphone mixing selection switch module 207; and the output end of the receiving device switch and display module is electrically connected with the input end of the signal processing module 201. The receiving device switch 105 is used to control the opening and closing of the wireless microphone receiving device, and is used to control the wave band switch to be dialled to the normal audio output selection end or the mixed audio output selection end; and the receiving device switch and display module 208 is used to transmit the control signal of the receiving device switch 105 to the signal processing module 201.

[0078] It should be noted that the receiving device switch 105 and the receiving device switch and display module 208 are general settings of those skilled in the art, and thus are not described in detail.

[0079] In the embodiment, the wired microphone is a goose neck microphone.

[0080] The wireless microphone receiving device of the embodiment has the wireless microphone charging module and the signal processing module in the control circuit, and the signal processing module enables the wireless microphone receiving device to process the wireless signal of the wireless microphone; the charging recess is provided, the first output end of the wireless microphone charging module is used as the wireless microphone charging port, and the wireless microphone charging port is arranged in the charging recess, so that the charging recess has the capability of charging the wireless microphone on the basis of having the capability of accommodating the wireless microphone, thereby realizing the accommodation and charging of the wireless microphone receiving device for the wireless microphone, avoiding the inconvenience of charging and accommodating the wireless microphone by using an additional charging wire and storage device in the prior art, and improving the convenience of accommodating and charging the wireless microphone; the limiting component is arranged in the charging recess, the limiting component is used as the fixing structure of the charging recess, the stability of the wireless microphone placed in the charging recess is improved, the limiting component is used as the anti-reverse insertion structure of the charging recess, the wireless microphone charging is prevented from being burnt when the wireless microphone is reversely inserted, and the charging safety of the wireless microphone receiving device is improved; the wireless microphone signal input module, the wired microphone signal input module, the wireless microphone signal output module, the wired microphone signal output module and the microphone mixing selection switch module are arranged in the control circuit and connected with the chip in the signal processing module, the signal processing module realizes the conversion of the signals of different types of microphones, the output audio of the wireless microphone receiving device is mixed and controlled by the microphone mixing selection switch, the different microphone output requirements of users are met, and the practicability of the wireless microphone receiving device is improved.

[0081] The above-described specific embodiments further illustrate the purpose, technical solutions and advantages of the utility model, and it should be understood that the above-described specific embodiments are only specific embodiments of the utility model and are not used to limit the protection scope of the utility model. It is particularly pointed out that, for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A wireless microphone receiver, comprising a base, a control circuit disposed inside the base, and a wireless microphone, characterized in that, The base is provided with a charging groove; the control circuit includes a wireless microphone charging module and a signal processing module. The input terminal of the wireless microphone charging module serves as the power supply interface. The first output terminal of the wireless microphone charging module serves as the wireless microphone charging port. The second output terminal of the wireless microphone charging module is electrically connected to the power input terminal of the signal processing module; The wireless microphone is communicatively connected to the first signal input terminal of the control circuit; The wireless microphone charging port is located within the charging recess. When the wireless microphone is detachably connected to the charging slot, the wireless microphone is electrically connected to the wireless microphone charging port.

2. The wireless microphone receiving device as described in claim 1, characterized in that, The wireless microphone charging module includes: a power adapter interface, a fifth light-emitting diode, a forty-seventh resistor, a first diode, a second diode, a second electrolytic capacitor, a third capacitor, a fourth capacitor, a step-down regulator, a third diode, a second inductor, a fourth electrolytic capacitor, a seventh capacitor, and a sixth capacitor; The first output port of the power adapter interface is electrically connected to the first terminal of the forty-seventh resistor; the second and third output ports of the power adapter interface are grounded. The second terminal of the forty-seventh resistor is electrically connected to the first terminal of the fifth light-emitting diode; The second terminal of the fifth light-emitting diode is grounded; The first terminal of the first diode is electrically connected to the first output port of the power adapter interface; the second terminal of the first diode is electrically connected to the first terminal of the second diode. The second terminal of the second diode is grounded; The first terminal of the second electrolytic capacitor, the first terminal of the third capacitor, and the first terminal of the fourth capacitor are respectively electrically connected to the second terminal of the first diode; the second terminal of the second electrolytic capacitor, the second terminal of the third capacitor, and the second terminal of the fourth capacitor are grounded. The first terminal of the buck regulator is electrically connected to the second terminal of the first diode; the third and fifth terminals of the buck regulator are grounded; the second terminal of the buck regulator is electrically connected to the first terminal of the third diode; the fourth terminal of the buck regulator is electrically connected to the first terminal of the fourth electrolytic capacitor. The second terminal of the third diode is grounded; the second terminal of the fourth electrolytic capacitor is grounded. The first terminal of the second inductor is electrically connected to the second terminal of the buck regulator; the second terminal of the second inductor is electrically connected to the first terminal of the fourth electrolytic capacitor. The first terminal of the seventh capacitor is electrically connected to the second terminal of the second inductor; the first terminal of the sixth capacitor is electrically connected to the second terminal of the second inductor; the second terminals of the seventh capacitor and the second terminals of the sixth capacitor are grounded; the input terminal of the power adapter interface serves as the input terminal of the wireless microphone charging module; the first terminal of the sixth capacitor serves as the first output terminal of the wireless microphone charging module; the first terminal of the sixth capacitor serves as the second output terminal of the wireless microphone charging module.

3. The wireless microphone receiving device as described in claim 2, characterized in that, It also includes a charging base; the charging base is disposed in the charging groove; the input end of the charging base is electrically connected to the first end of the sixth capacitor; when the wireless microphone is detachably connected to the charging groove, the wireless microphone is electrically connected to the output end of the charging base.

4. The wireless microphone receiving device as described in claim 3, characterized in that, The charging base includes: a current-limiting resistor and a charging spring pin; The first end of the current-limiting resistor is electrically connected to the first end of the sixth capacitor; The first input terminal of the charging spring pin's socket is electrically connected to the second terminal of the current-limiting resistor; The second input terminal of the needle seat of the charging spring pin is grounded; The tip of the charging spring pin serves as the output end of the charging base.

5. A wireless microphone receiving device as described in claim 1, characterized in that, It also includes limiting components; The wireless microphone is equipped with a mating component; The limiting component is disposed within the charging groove; When the wireless microphone is detachably connected to the charging recess, the limiting component and the mating component fit together.

6. The wireless microphone receiving device as described in claim 1, characterized in that, The control circuit also includes: a wireless microphone signal input module, a wired microphone signal input module, a wireless microphone signal output module, a wired microphone signal output module, and a microphone mixing selection switch module; The input terminal of the wired microphone signal input module serves as a wired microphone signal input interface; the power supply input terminal of the wired microphone signal input module is electrically connected to the power supply output terminal of the signal processing module; the output terminal of the wired microphone signal input module is electrically connected to the first signal input terminal of the signal processing module; the input terminal of the wired microphone signal output module is electrically connected to the first signal output terminal of the signal processing module; the output terminal of the wired microphone signal output module serves as a wired microphone audio signal output interface. The input terminal of the wireless microphone signal input module is communicatively connected to the wireless microphone; the power supply input terminal of the wireless microphone signal input module is electrically connected to the power supply output terminal of the signal processing module; the output terminal of the wireless microphone signal input module is electrically connected to the second signal input terminal of the signal processing module; the input terminal of the wireless microphone signal output module is electrically connected to the second signal output terminal of the signal processing module; the output terminal of the wireless microphone signal output module serves as the wireless microphone audio signal output interface. The output terminal of the microphone mixing selection switch module is electrically connected to the switch signal input terminal of the signal processing module.

7. A wireless microphone receiving device as described in claim 6, characterized in that, It also includes a wired microphone; the wired microphone is disposed on the upper surface of the base; the signal output terminal of the wired microphone is electrically connected to the signal input interface of the wired microphone.

8. A wireless microphone receiving device as described in claim 6, characterized in that, The signal processing module includes: a BP1048 chip; The power input terminal of the wired microphone signal input module is electrically connected to the second pin of the BP1048 chip; the output terminal of the wired microphone signal input module is electrically connected to the seventh pin of the BP1048 chip; the output terminal of the wired microphone signal input module is electrically connected to the forty-first pin of the BP1048 chip; the output terminal of the wired microphone signal input module is electrically connected to the forty-third pin of the BP1048 chip; the output terminal of the wired microphone signal input module is electrically connected to the sixth pin of the BP1048 chip; the output terminal of the wired microphone signal input module is electrically connected to the forty-fifth pin of the BP1048 chip; and the input terminal of the wired microphone signal output module is electrically connected to the forty-seventh pin of the BP1048 chip. The power input terminal of the wireless microphone signal input module is electrically connected to the second pin of the BP1048 chip; the output terminal of the wireless microphone signal input module is electrically connected to the third pin of the BP1048 chip; the output terminal of the wireless microphone signal input module is electrically connected to the twenty-second pin of the BP1048 chip; the output terminal of the wireless microphone signal input module is electrically connected to the thirty-fourth pin of the BP1048 chip; the output terminal of the wireless microphone signal input module is electrically connected to the fortieth pin of the BP1048 chip; the output terminal of the wireless microphone signal input module is electrically connected to the forty-second pin of the BP1048 chip; the input terminal of the wireless microphone signal output module is electrically connected to the forty-sixth pin of the BP1048 chip; the second output terminal of the wireless microphone charging module is electrically connected to the second pin of the BP1048 chip; and the output terminal of the microphone mixing selection switch module is electrically connected to the sixth pin of the BP1048 chip.

9. A wireless microphone receiving device as described in claim 7, characterized in that, The wired microphone is a gooseneck microphone.

10. A wireless microphone receiving device as described in claim 8, characterized in that, The input terminal of the wireless microphone signal input module is connected to the wireless microphone via 2.4G wireless communication.

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