CN109496033B

CN109496033B - Flashlight controlling means of wireless communication and multi-functional flashlight of patrolling and examining thereof

Info

Publication number: CN109496033B
Application number: CN201811265344.XA
Authority: CN
Inventors: 汤付康; 杨新勇; 朱建国
Original assignee: Shenzhen Fise Intelligent Technology Co ltd
Current assignee: Shenzhen Fise Intelligent Technology Co ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2021-06-22
Anticipated expiration: 2038-10-29
Also published as: CN109496033A

Abstract

The embodiment of the invention discloses a wireless communication flashlight control device and a multifunctional inspection flashlight thereof, wherein the multifunctional inspection flashlight comprises a spotlight, a floodlight, a red signal lamp, a green signal lamp, a laser lamp, a battery and a flashlight control device; the flashlight control device performs corresponding on-off control on a spotlight, a floodlight, a red signal lamp, a green signal lamp and a laser lamp according to the lamp control keys, performs confirmation, return, left and right photographing and video recording function control according to the function keys, acquires current GPS positioning information in real time, wirelessly uploads the current GPS positioning information to a remote control end, acquires voice signals, wirelessly uploads the voice signals, receives and processes the voice-loaded carrier signals, and plays the voice-loaded carrier signals; and the charging state is also controlled, and a charging power supply is used for charging the battery and acquiring the voltage of the battery for power supply. The wireless communication function and the GPS positioning function are added on the basis of having the functions of lighting, shooting, photographing and recording, the functions of positioning and uploading in a wireless mode can be achieved in real time, and the inspection condition can be conveniently and immediately mastered by combining online voice talkback.

Description

Flashlight controlling means of wireless communication and multi-functional flashlight of patrolling and examining thereof

Technical Field

The invention relates to the technical field of electronics, in particular to a wireless communication flashlight control device and a multifunctional inspection flashlight thereof.

Background

The patrol flashlight is used as efficient and practical patrol recording, overhauling, security protection, patrol and lighting equipment and is widely applied to workplaces such as railways, electric power, oil fields, metallurgy, petrochemical gas overhauling, armies, policemen, industrial and mining enterprises and the like. However, the existing inspection flashlight only has the functions of illumination, camera shooting, picture taking, sound recording and the like, and cannot perform online voice talkback or upload files and GPS positions in real time through wireless communication.

Disclosure of Invention

In order to solve the technical problems, the embodiment of the invention provides a wireless communication flashlight control device and a multifunctional inspection flashlight thereof, so as to solve the problem that the conventional inspection flashlight cannot perform wireless communication and GPS positioning.

The embodiment of the invention provides a wireless communication flashlight control device, which comprises a 4G intelligent communication module, an MCU control module, a charging module, an audio module and a key control module;

the key control module outputs corresponding switch signals, lamp control signals and function signals according to key operation; the 4G intelligent communication module performs on-off control according to the on-off signal, wirelessly communicates with the host after being started, acquires the current GPS positioning information in real time and wirelessly uploads the current GPS positioning information to the remote control end; the MCU control module and the 4G intelligent communication module control the on and off of corresponding lamps according to the lamp control signals and execute corresponding functional operation according to the functional signals; the audio module collects voice signals, processes the voice signals through the 4G intelligent communication module and then wirelessly uploads the voice signals to the remote control terminal; the 4G intelligent communication module receives the carrier signal loaded with the voice and sent by the remote control end, processes and demodulates the carrier signal into an analog signal, and the analog signal is amplified by the audio module and then played; the 4G intelligent communication module controls the charging state and parameter setting of the charging module; the charging module converts the charging power supply into charging current for charging and carries out charging state indication, and supplies power to the MCU control module and the audio module.

Optionally, in the wireless communication manual control device, the model of the 4G intelligent communication module is ZM 3515; an antenna pin is pulled out by a 4G radio frequency module in the 4G intelligent communication module and is connected with a 4G main antenna and a 4G diversity antenna, and a corresponding antenna pin is pulled out by a WiFi/BT/GPS chip in the 4G intelligent communication module and is respectively connected with a GPS antenna and the WiFi/BT antenna.

Optionally, in the wireless communication flashlight control device, the key control module includes a power-on key, a green signal lamp key, a red signal lamp key, an illumination key, a confirmation key, a left key, a right key, a return key, a photographing key, and a video recording key;

the switch-on key is pressed down and outputs power supply signal to control the switch-on and switch-off of the 4G intelligent communication module, the green signal lamp key is pressed down and outputs green control signal to the MCU control module to control the switch of the green signal lamp, the red signal lamp key is pressed down and outputs red control signal to the MCU control module to control the switch of the red signal lamp, and the lighting key is pressed down and outputs bright control signal to the MCU control module to control the floodlight and the spotlight to be on and off circularly.

Optionally, in the wireless communication flashlight control device, the MCU control module includes a spotlight interface, a function lamp interface, a laser lamp interface, a first current control chip, a second current control chip, a single chip, a first MOS transistor, a second MOS transistor, a third MOS transistor, a fourth MOS transistor, a first triode, a second triode, a third triode, a fourth triode, a video status indicator lamp, and a battery power status indicator lamp;

a P2.2 pin of the single chip microcomputer is connected with a grid electrode of the second MOS tube, a P2.1 pin of the single chip microcomputer is connected with a grid electrode of the third MOS tube, and a P2.0 pin of the single chip microcomputer is connected with a grid electrode of the fourth MOS tube; a VDD pin of the single chip microcomputer is connected with the battery end, a VIN pin of the first current control chip and a P1.1 pin of the single chip microcomputer; the P1.3 pin of the singlechip is connected with the 3 rd pin of the green signal lamp key, the P1.2 pin of the singlechip is connected with the 3 rd pin of the lighting key, the P2.4 pin of the singlechip is connected with the 3 rd pin of the red signal lamp key, the P2.5 pin of the singlechip is connected with the grid electrode of the first MOS tube and the collector electrode of the first triode, the emitter electrode of the first triode is grounded, the VSS pin of the singlechip is grounded, the P0.0 pin of the singlechip is connected with the 4G intelligent communication module, the P1.0 pin of the singlechip is connected with the 4G intelligent communication module and the base electrode of the first triode, and the P5.4 pin of the singlechip is connected with the EN pin of the first current control chip and the EN pin of the second current;

the VOUT pin of the first current control chip is connected with the drain electrode of the first MOS tube and the drain electrode of the second MOS tube; the FB pin of the first current control chip is connected with the No. 2 pin of the spotlight interface and the No. 1 pin of the functional lamp interface, the source electrode of the second MOS tube is connected with the No. 1 pin of the spotlight interface, the source electrode of the first MOS tube is connected with the No. 2 pin of the functional lamp interface, the VIN pin of the second current control chip is connected with the battery terminal, the VOUT pin of the second current control chip is connected with the drain electrode of the third MOS tube and the drain electrode of the fourth MOS tube, the source electrode of the third MOS tube is connected with the No. 3 pin of the functional lamp interface, and the source electrode of the fourth MOS tube is connected with the No. 4 pin of the functional lamp interface; the FB pin of the second current control chip is connected with the 5 th pin of the functional lamp interface;

the base electrodes of the second triode, the third triode and the fourth triode are all connected with the 4G intelligent communication module; the collector of the second triode is connected with the negative electrode of the photographing and video recording state indicator lamp, the collector of the third triode is connected with the negative electrode of the battery electric quantity state indicator lamp, the positive electrode of the photographing and video recording state indicator lamp and the positive electrode of the battery electric quantity state indicator lamp are both connected with the power supply end, the collector of the fourth triode is connected with the 2 nd pin of the laser lamp interface, the 1 st pin of the laser lamp interface is connected with the battery end, and the 3 rd pin of the laser lamp interface is connected with the 4 th pin of the laser lamp interface and the ground; and the emitting electrodes of the second triode, the third triode and the fourth triode are all grounded.

Optionally, in the wireless communication flashlight control device, the MCU control module further includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a sixth resistor;

the one end of first resistance is connected the P0.0 foot of singlechip and the one end of second resistance, the other end ground connection of first resistance, 4G intelligent communication module is connected to the other end of second resistance, the one end of third resistance is connected the P1.0 foot of singlechip and the one end of fourth resistance, the other end ground connection of third resistance, the base of 4G intelligent communication module and first triode is connected to the other end of fourth resistance, the FB foot of first current control chip is connected to the one end of fifth resistance, the GND foot and the ground of first current control chip are connected to the other end of fifth resistance, the FB foot of second current control chip is connected to the one end of sixth resistance, the GND foot and the ground of second current control chip are connected to the other end of sixth resistance.

Optionally, in the wireless communication flashlight control device, the MCU control module further includes a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, and a fourteenth resistor;

one end of the seventh resistor is connected with one end of the eighth resistor and the base of the second triode, the other end of the seventh resistor is connected with the 4G intelligent communication module, the other end of the eighth resistor is connected with the emitting electrode and the ground of the second triode, the ninth resistor is connected between the collecting electrode of the second triode and the negative electrode of the photographing and video recording state indicating lamp, one end of the tenth resistor is connected with one end of the eleventh resistor and the base of the third triode, the other end of the tenth resistor is connected with the 4G intelligent communication module, the other end of the eleventh resistor is connected with the emitting electrode and the ground of the third triode, the twelfth resistor is connected between the collecting electrode of the third triode and the negative electrode of the battery electric quantity state indicating lamp, the thirteenth resistor is connected between the base of the fourth triode and the 4G intelligent communication module, and the fourteenth resistor is connected between the collecting electrode of the fourth triode and the 2 nd pin.

Optionally, in the wireless communication flashlight control device, the charging module includes a charging management chip, a first inductor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor;

a VBUS1 pin of the charging management chip is connected with a VBUS2 pin, one end of the first capacitor and the charging end; the PMID pin of the charging management chip is connected with the other end of the first capacitor and the ground through the second capacitor, the PG/pin of the charging management chip is connected with the 2 nd pin of the indicator lamp group, the STAT pin of the charging management chip is connected with the 4 th pin of the indicator lamp group, the 1 st pin of the indicator lamp group is connected with the 3 rd pin and the power supply end of the indicator lamp group, and the SDA pin and the SCL pin of the charging management chip are both connected with the 4G intelligent communication module; the INT pin of the charging management chip is connected with EINT3 and is also connected with a power supply end through a seventeenth resistor, the OTG pin and the CE/pin of the charging management chip are both connected with the 4G intelligent communication module, and the PSEL pin of the charging management chip is grounded through a fifteenth resistor; the SW1 pin of the charging management chip is connected with the SW2 pin of the charging management chip, one end of the first inductor and one end of the fourth capacitor; the BTST pin of the charging management chip is connected with the other end of the fourth capacitor; an SYS1 pin of the charging management chip is connected with an SYS2 pin of the charging management chip, the other end of the first inductor, one end of the third capacitor and a power supply end; the other end of the third capacitor is grounded, a BAT1 pin of the charging management chip is connected with a BAT2 pin and a battery end of the charging management chip, a TS pin of the charging management chip is connected with a negative temperature coefficient thermistor of the battery through an eighteenth resistor, and an ILIM pin of the charging management chip is grounded through a sixteenth resistor.

Optionally, in the wireless communication flashlight control device, the MIC circuit of the audio module includes a microphone, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a nineteenth resistor, a twentieth resistor, a twenty-second resistor, a first esd diode, and a second esd diode;

a 1 st pin of the microphone is connected with one end of a first electrostatic protection diode, one end of an eleventh capacitor and one end of a ninth capacitor; a2 nd pin of the microphone is connected with one end of the second electrostatic protection diode, one end of the tenth capacitor and the other end of the ninth capacitor; the other end of the tenth capacitor is connected with the other end of the eleventh capacitor and the ground, and a pin 3, a pin 4 and a pin 5 of the microphone are all grounded; one end of the twentieth resistor is connected with one end of the sixth capacitor and one end of the ninth capacitor, the other end of the twentieth resistor is connected with one end of the nineteenth resistor and one end of the eighth capacitor, the other end of the nineteenth resistor is connected with one end of the fifth capacitor and the 4G intelligent communication module, one end of the twentieth resistor is connected with one end of the seventh capacitor and one end of the tenth capacitor, the other end of the twentieth resistor is connected with the other end of the eighth capacitor and one end of the twenty-second resistor, and the other ends of the sixth capacitor and the seventh capacitor are both connected with the audio codec; the other end of the twenty-second resistor, the other end of the fifth capacitor, the other end of the first electrostatic protection diode and the other end of the second electrostatic protection diode are all grounded.

Optionally, in the wireless communication flashlight control device, the audio module audio power amplifier circuit includes: the power amplifier comprises a power amplifier chip, a loudspeaker, a first magnetic bead, a second magnetic bead, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, a twenty-third resistor and a twenty-fourth resistor;

the power supply end is connected to the VDD foot of power amplifier chip, 4G intelligent communication module is connected to the SHDN foot of power amplifier chip, the one end of fourteenth electric capacity and the one end of twenty-third resistance are connected to the INP foot of power amplifier chip, the other end of twenty-third resistance passes through twelfth electric capacity and connects 4G intelligent communication module, the other end of fourteenth electric capacity and the one end of twenty-fourth resistance are connected to the INN foot of power amplifier chip, the other end of twenty-fourth resistance passes through thirteenth electric capacity ground connection, the VOP foot of power amplifier chip passes through the one end of first magnetic bead connection fifteenth electric capacity and the 1 st foot of loudspeaker, the VON foot of power amplifier chip passes through the one end of second magnetic bead connection sixteenth electric capacity and the 2 nd foot of loudspeaker, the other end and the ground of sixteenth electric capacity are connected to the other end of fifteenth electric capacity, the 3 rd foot and the 4 th

The second aspect of the embodiment of the invention provides a wireless communication multifunctional inspection flashlight, which comprises a spotlight, a floodlight, a red signal lamp, a green signal lamp, a laser lamp, a battery and a wireless communication flashlight control device;

the flashlight control device performs corresponding on-off control on a spotlight, a floodlight, a red signal lamp, a green signal lamp and a laser lamp according to the lamp control keys, performs confirmation, return, left and right photographing and video recording function control according to the function keys, acquires current GPS positioning information in real time, wirelessly uploads the information to a remote control end, acquires voice signals, wirelessly uploads the voice signals, receives and processes the voice-loaded carrier signals, and plays the voice-loaded carrier signals; and the charging state is also controlled, and a charging power supply is used for charging the battery and acquiring the voltage of the battery for power supply.

In the technical scheme provided by the embodiment of the invention, the wireless communication multifunctional inspection flashlight comprises a spotlight, a floodlight, a red signal lamp, a green signal lamp, a laser lamp, a battery and a flashlight control device; the flashlight control device performs corresponding on-off control on a spotlight, a floodlight, a red signal lamp, a green signal lamp and a laser lamp according to the lamp control keys, performs confirmation, return, left and right photographing and video recording function control according to the function keys, acquires current GPS positioning information in real time, wirelessly uploads the current GPS positioning information to a remote control end, acquires voice signals, wirelessly uploads the voice signals, receives and processes the voice-loaded carrier signals, and plays the voice-loaded carrier signals; and the charging state is also controlled, and a charging power supply is used for charging the battery and acquiring the voltage of the battery for power supply. The wireless communication function and the GPS positioning function are added on the basis of having the functions of lighting, shooting, photographing and recording, the functions of positioning and uploading audio and video can be achieved instantly, the inspection condition can be conveniently and instantly mastered by combining online voice talkback, and the use of a user under various conditions is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of a wireless communication multifunctional inspection flashlight in the embodiment of the invention.

Fig. 2 is a schematic circuit diagram of a part of a 4G intelligent communication module in the flashlight control device according to the embodiment of the invention.

Fig. 3 is a schematic circuit diagram of a part of a key control module in the flashlight control device according to the embodiment of the invention.

Fig. 4 is a schematic circuit diagram of another part of the key control module in the flashlight control device according to the embodiment of the invention.

Fig. 5 is a schematic circuit diagram of a part of an MCU control module in the flashlight control device according to an embodiment of the present invention.

Fig. 6 is a schematic circuit diagram of another part of the MCU control module in the flashlight control device according to the embodiment of the present invention.

Fig. 7 is a schematic circuit diagram of a charging module in the flashlight control device according to the embodiment of the invention.

Fig. 8 is a schematic circuit diagram of a portion of an audio module in a flashlight control device according to an embodiment of the present invention.

Fig. 9 is a schematic circuit diagram of another part of an audio module in a flashlight control device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive step, belong to the protection scope of the present invention.

Referring to fig. 1, the multifunctional patrol inspection flashlight with wireless communication provided by the embodiment of the invention comprises a spotlight, a floodlight, a red signal lamp, a green signal lamp, a laser lamp, a battery and a manual control device with wireless communication function and GPS function. The flashlight control device performs corresponding on-off control on a spotlight, a floodlight, a red signal lamp, a green signal lamp and a laser lamp according to the lamp control keys, performs function control such as confirmation, return, left and right photographing, video recording and the like according to the function keys, acquires current GPS positioning information in real time, wirelessly uploads the current GPS positioning information to a remote control end, acquires voice signals and wirelessly uploads the voice signals, receives and processes the voice-loaded carrier signals, and plays the voice-loaded carrier signals; the charging power supply is also used for charging the battery and acquiring the voltage of the battery for supplying power.

The flashlight control device comprises a 4G intelligent communication module 10, an MCU control module 20, a charging module 30, an audio module 40 and a key control module 50. The key control module 50 outputs corresponding switch signals, lamp control signals and function signals (such as confirmation, return, left key, right key, photographing and video recording) according to key operation; the 4G intelligent communication module 10 performs on-off control according to the switching signal, wirelessly communicates with the host after being started, acquires the current GPS positioning information in real time and wirelessly uploads the current GPS positioning information to the host. The MCU control module 20 and the 4G intelligent communication module 10 correspondingly control the on and off of a spotlight, a floodlight, a red signal lamp, a green signal lamp and a laser lamp according to the lamp control signal; and executing corresponding functional operation according to the functional signal. The audio module 40 collects voice signals of a user, wirelessly uploads the voice signals to the remote control terminal after being processed by the 4G intelligent communication module 10, and the 4G intelligent communication module receives carrier signals loaded with voice and sent by the remote control terminal, processes and demodulates the carrier signals into analog signals, and plays the analog signals after being amplified by the audio module. The 4G intelligent communication module controls the charging state and parameter setting of the charging module; the charging module 30 converts the charging power into a charging current to charge the battery and indicates the charging state, and supplies power to the MCU control module 20 and the audio module 40.

Referring to fig. 2, in the embodiment, the 4G intelligent communication module 10 is a wireless intelligent module supporting 4G LTE (a general term for LTE network systems such as TD-LTE and FDD-LTE), and includes four cores with a primary frequency of 1.3GHz, and adopts an intelligent module with a model of ZM3515

A core-A53 MPCoreTM architecture CPU, MMMB RF transceiver, PMIC (Power Management IC), eMMC (Embedded Multi Media card), and WCN (Wireless connectivity) chip integrating WiFi, BT (Bluetooth) and GPS; the internal pull-out antenna pin of the 4G rf module is connected to the external 4G main antenna 130 and the 4G diversity antenna 140. The baseband chip is connected with the charging module 30 and the key control module 50, the power supply chip is connected with the audio module 40 and the key control module 50, and the audio chip is connected with the audioAnd (6) a module 40. In fig. 2, the I2C bus line indicates the SDA pin and the SCL pin to which the charging management chip U4 (fig. 7) described below is connected. The GPIO indicates a general purpose input/output interface, outputs an AUDIO _ EN signal to a power amplifier chip U5 (fig. 9) described below, outputs a charging enable signal GPIO _102 and a DRVVBUS signal to a charging management chip U4, outputs a video recording state signal GPIO _3_ ZM3515 and a prompt signal GPIO _1_ ZM3515 to a single chip microcomputer U3 (fig. 5), and outputs a video recording signal PWM0, an electric control signal PWM4, and a GPIO65 signal to the MCU control module 20. The key signals indicate signals input when 6 function keys (CON4 to CON9) are pressed, and include a KPROW0 signal, a KPROW1 signal, a KPROW2 signal, a KPCOL1 signal, and a KPCOL2 signal. The audio chip outputs the audio signal AU _ HPL to the power amplifier chip U5 of the audio module 40, and receives the voice signal transmitted by the microphone in the audio module 40 (transmitted through the differential network AU _ VIN0_ P and AU _ VIN0_ N). The power chip receives a power signal PWRKEY transmitted by the power-on key CON0 in the key control module 50, and provides a dc bias voltage MICBIAS0 to the audio module 40.

Wherein, lte (long Term evolution) supports fdd (frequency Division duplex) band 1/3, tdd (time Division duplex) band 38/39/40/41; the data transmission speed is up to 150Mbps in downlink and up to 50Mbps in uplink. The 3G supports WCDMA (wideband Code Division Multiple access) band 1/2/5/8, the downlink data transmission speed reaches 42.2Mbps, and the uplink data transmission speed reaches 11.5 Mbps; TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) band 34/39, the data transmission speed is up to 2.8Mbps in the downlink, and up to 2.2Mbps in the uplink. The 2G supports GSM (Global System for Mobile communication)850/900/1800/1900, and the data transmission supports GPRS/EDGE Class 12.

In the 4G smart communication module 10, corresponding antenna pins are pulled out from a WCN chip (i.e., a WiFi/BT/GPS chip in the figure) integrated with WiFi, BT, and GPS, and are respectively connected to an external GPS antenna 110 and a WiFi/BT antenna (WiFi and BT common antenna) 120. Wifi supports 802.11b/g/n, BT supports v4.0Low Energy (LE) and is downward compatible, and GPS supports the combination of GPS and Glonass or GPS and Beidou.

An SIM card holder is also arranged inside the 4G intelligent communication module 10. The multifunctional inspection flashlight system can communicate with the outside through the base station when an SIM card is inserted in the system for detecting voice call or data transmission. When no SIM card is detected, the Internet can be accessed through WiFi, and the APP is used for voice talkback. The system can also be connected with other devices through Bluetooth to carry out file transfer.

The GPS positioning can upload the received site coordinate position to a remote control center through GPS antenna wireless communication, or attach GPS position information to a picture or a video file when shooting and recording.

Referring to fig. 3 and 4, in the embodiment, the multifunctional inspection flashlight is provided with a spotlight, a floodlight, a red signal lamp, a green signal lamp and a laser lamp; different lighting functions are implemented by the key press state of the key control module 50. The key control module 50 provides a power-on key CON0 and 9 function keys (all model numbers KAN4542) for the whole system.

The 2 nd pin of the power on key CON0 is connected to the power chip inside the 4G intelligent communication module 10 through a resistor, and the 1 st pin of the power on key CON0 is grounded. When the power-on key CON0 (preferably KAN0631-0501C) is pressed, the 2 nd pin outputs the power signal PWRKEY to control the 4G smart communication module 10 to be turned on or off.

The 1 st pin of the green signal light key CON1 is connected to the 2 nd pin of the green signal light key CON1 and the ground, and the 3 rd pin of the green signal light key CON1 is connected to the 4 th pin of the green signal light key CON1 and the MCU control module 20; the 1 st pin of the red signal light key CON2 is connected to the 2 nd pin of the red signal light key CON2 and the ground, and the 3 rd pin of the red signal light key CON2 is connected to the 4 th pin of the red signal light key CON2 and the MCU control module 20; the 1 st pin of the illumination key CON3 is connected to the 2 nd pin of the illumination key CON3 and ground, and the 3 rd pin of the illumination key CON3 is connected to the 4 th pin of the illumination key CON3 and the MCU control module 20. The green signal light button CON1, the red signal light button CON2, and the illumination button CON3 can be controlled by the MCU control module 20 when the 4G smart communication module is not powered on. The specific functions are as follows: when the green signal light KEY CON1 is pressed, it outputs a green control signal KEY _ G to the MCU control module 20 to control the on/off of the green signal light. When the red signal light KEY CON1 is pressed, it outputs a red control signal KEY _ R to the MCU control module 20 to control the red signal light to be turned on or off. When the illumination KEY CON3 is pressed, the lighting control signal KEY _ LED is output to the MCU control module 20 to control the floodlight and the spotlight to be turned on and off cyclically.

The intelligent module ZM3515 includes 6 function keys: the confirm key CON4, the left key CON5, the right key CON6, the return key CON7, the photograph key CON8 and the video key CON9 all belong to function keys of the 4G smart communication module, and the corresponding functions can be realized only after the smart module ZM3515 is turned on. Wherein, the 1 st pin of the confirmation key CON4 is connected to the 2 nd pin of the confirmation key CON4 and the baseband chip inside the 4G smart communication module (transmitting KPCOL1 signal), and the 3 rd pin of the confirmation key CON4 is connected to the 4 th pin of the confirmation key CON4 and the baseband chip inside the 4G smart communication module (transmitting KPROW0 signal); the 1 st pin of the left key CON5 is connected to the 2 nd pin of the left key CON5 and the baseband chip inside the 4G smart communication module (transmitting KPCOL1 signal), and the 3 rd pin of the left key CON5 is connected to the 4 th pin of the left key CON5 and the baseband chip inside the 4G smart communication module (transmitting KPROW1 signal); the 1 st pin of the right key CON6 is connected to the 2 nd pin of the right key CON6 and the baseband chip inside the 4G smart communication module (transmitting KPCOL1 signal), and the 3 rd pin of the right key CON6 is connected to the 4 th pin of the right key CON6 and the baseband chip inside the 4G smart communication module (transmitting KPROW2 signal); the 1 st pin of the return key CON7 is connected to the 2 nd pin of the return key CON7 and the baseband chip inside the 4G smart communication module (transmitting KPCOL2 signal), and the 3 rd pin of the return key CON7 is connected to the 4 th pin of the return key CON7 and the baseband chip inside the 4G smart communication module (transmitting KPROW0 signal); the 1 st pin of the photographing key CON8 is connected to the 2 nd pin of the photographing key CON8 and the baseband chip inside the 4G smart communication module (transmits KPCOL2 signal), and the 3 rd pin of the photographing key CON8 is connected to the 4 th pin of the photographing key CON8 and the baseband chip inside the 4G smart communication module (transmits KPROW1 signal); the 1 st pin of the video key CON9 is connected to the 2 nd pin of the video key CON9 and the baseband chip inside the 4G smart communications module (for transmitting KPCOL2 signals), and the 3 rd pin of the video key CON9 is connected to the 4 th pin of the video key CON9 and the baseband chip inside the 4G smart communications module (for transmitting KPROW2 signals). When the confirmation key CON4, the left key CON5, the right key CON6, the return key CON7, the photographing key CON8 and the video key CON9 are pressed, the corresponding signals composed of the KPCOL1 signal, the KPCOL2 signal and the KPROW0 signal to KPROW2 signal are transmitted to the intelligent module ZM3515, and the corresponding confirmation (colkp 1+ KPROW0), left control (KPCOL1+ KPROW1), right control (KPCOL1+ KPROW2), return (KPCOL2+ KPROW0), photographing (KPCOL2+ KPROW1) and video (KPCOL2+ KPROW2) functions are realized.

Referring to fig. 5 and 6, the MCU control module 20 and the 4G intelligent communication module 10 together control a spotlight, a floodlight, a red light, a green light, and a laser light, and are used for lighting, recording, photographing, and signaling.

The MCU control module 20 comprises a spotlight interface J1, a functional lamp interface J2, a laser lamp interface J3, a first current control chip U1, a second current control chip U2, a single chip microcomputer U3, a first MOS tube Q1, a second MOS tube Q2, a third MOS tube Q3, a fourth MOS tube Q4, a first triode N1, a second triode N2, a third triode N3, a fourth triode N4, a video status indicator light LEDP and a battery electric quantity status indicator light LEDV; a P2.2 pin of the singlechip U3 is connected with a grid electrode of a second MOS tube Q2, a P2.1 pin of the singlechip U3 is connected with a grid electrode of a third MOS tube Q3, and a P2.0 pin of the singlechip U3 is connected with a grid electrode of a fourth MOS tube Q4; a VDD pin of the singlechip U3 is connected with a battery end (input battery voltage VBAT), a VIN pin of the first current control chip U1 and a P1.1 pin of the singlechip U3; a pin P1.3 of a singlechip U3 is connected with a pin 3 of a green signal lamp key CON1, a pin P1.2 of a singlechip U3 is connected with a pin 3 of a lighting key CON3, a pin P2.4 of a singlechip U3 is connected with a pin 3 of a red signal lamp key CON2, a pin P2.5 of a singlechip U3 is connected with a grid electrode of a first MOS tube Q1 and a collector electrode of a first triode N1, an emitter electrode of the first triode N1 is grounded, a pin VSS of the singlechip U3 is grounded, a pin P0.0 of a singlechip U3 is connected with a 4G intelligent communication module, a pin P1.0 of a singlechip U3 is connected with the 4G intelligent communication module and a base electrode of the first triode N1, and a pin P5.4 of a singlechip U3 is connected with a pin EN 3985 of a first current control chip U1 and a pin EN 2 of a second.

The VOUT pin of the first current control chip U1 is connected with the drain electrode of a first MOS tube Q1 and the drain electrode of a second MOS tube Q2; an FB pin of a first current control chip U1 is connected with a No. 2 pin of a spotlight interface J1 and a No. 1 pin of a functional lamp interface J2, a source of a second MOS tube Q2 is connected with a No. 1 pin of the spotlight interface J1, a source of a first MOS tube Q1 is connected with a No. 2 pin of a functional lamp interface J2, a VIN pin of a second current control chip U2 is connected with a battery end, a VOUT pin of the second current control chip U2 is connected with a drain of a third MOS tube Q3 and a drain of a fourth MOS tube Q4, a source of a third MOS tube Q3 is connected with a No. 3 pin of the functional lamp interface J2, and a source of a fourth MOS tube Q4 is connected with a No. 4 pin of the functional lamp interface J2; the FB pin of the second current control chip U2 is connected with the 5 th pin of the functional lamp interface J2;

bases of the second triode N2, the third triode N3 and the fourth triode N4 are all connected with the 4G intelligent communication module; a collector of the second triode N2 is connected with a negative electrode of a photo-video status indicator light LEDP, a collector of the third triode N3 is connected with a negative electrode of a battery electric quantity status indicator light LEDV, a positive electrode of the photo-video status indicator light LEDP and a positive electrode of the battery electric quantity status indicator light LEDV are both connected with a power supply end (a power supply end generated by the charging module 30 outputs a power supply voltage VSYS), a collector of the fourth triode N4 is connected with a2 nd pin of a laser light interface J3, a 1 st pin of the laser light interface J3 is connected with a battery end, and a 3 rd pin of the laser light interface J3 is connected with a 4 th pin of the laser light interface J3 and the ground; the emitters of the second transistor N2, the third transistor N3 and the fourth transistor N4 are all grounded.

In this embodiment, the FOCUS LED and the FEEDBACK are positive and negative electrode networks of the spotlight interface J1, that is, the high and low level combination of the spotlight control signal FOCUS LED and the FEEDBACK signal FEEDBACK can control the on and off states of the spotlight. The functional lamp interface J2 is used as an interface set of a floodlight, a RED signal lamp and a green signal lamp, and the AUXILIARY LED, the RED LIGHT, the GREEN LIGHT and the FEEDBACK network are respectively a positive electrode network and a negative electrode network; the high and low level combinations of the floodlight control signal automatic LIGHT LED and the FEEDBACK signal FEEDBACK, the RED LIGHT control signal RED LIGHT and the FEEDBACK signal FEEDBACK, and the green LIGHT control signal GREEN LIGHT and the FEEDBACK signal FEEDBACK can respectively control the on and off states of the floodlight, the RED signal LIGHT and the green signal LIGHT.

The first current control chip U1 and the second current control chip U2 are both PAM2808 in model. When the single chip microcomputer U3 (model number is SN8P2501D) receives a light-on signal, the P5.4 pin outputs high level to turn on the EN pins of the first current control chip U1 and the second current control chip U2, so that the single chip microcomputer U3 outputs stable current to supply power to the 4 lamps. The specific control mode is as follows:

a pin P1.2 of the single chip microcomputer U3 receives a light control signal KEY _ LED transmitted by the lighting KEY CON3, outputs a corresponding high-low level through a pin P2.5 to control the on-off of a first MOS transistor Q1(PMOS transistor), generates a floodlight control signal AUXILIARY LED of a corresponding level, and outputs the floodlight control signal AUXILIARY LED from the functional light interface J2 to control the on-off of a floodlight; the switch of a second MOS tube Q2(PMOS tube) is controlled by outputting a corresponding high-low level through a P2.2 pin, a floodlight control signal AUXILIARY LED with a corresponding level is generated and is output from a functional lamp interface J2 to control the on-off of a spotlight, and therefore lighting control is achieved.

The pin P2.4 of the single chip microcomputer U3 receives the RED control signal KEY _ R transmitted by the RED signal lamp KEY CON2, outputs an LED _ R _ MCU signal through the pin P2.1 to control the switching of the third MOS transistor Q3(PMOS transistor), generates a RED LIGHT control signal RED LIGHT of a corresponding level, and outputs the RED LIGHT control signal RED LIGHT from the functional lamp interface J2 to control the on/off of the RED signal lamp. A pin P1.3 of the single chip microcomputer U3 receives a green control signal KEY _ G transmitted by the green signal lamp KEY CON1, outputs an LED _ G _ MCU signal through a pin P2.0 to control the switching of the fourth MOS transistor Q4(PMOS transistor), generates a green signal control signal GREEN LIGHT with a corresponding level, and outputs the green signal control signal from the functional lamp interface J2 to control the control of the green signal lamp.

The 4G intelligent communication module is communicated with the single chip microcomputer U3 through the video state signal GPIO _3_ ZM3515, and after the P0.0 pin of the single chip microcomputer U3 receives the video state signal GPIO _3_ ZM3515, the corresponding voltage is output through the P1.0 pin to control the output of the floodlight. The 4G intelligent communication module controls the switch of the second triode N2 through a recording light signal PWM0 so as to control the on and off of a photographing and recording state indicator light LEDP; the on-off of a third triode N3 is controlled through an electric control signal PWM4 so as to control the on-off of a battery electric quantity state indicator light LEDV; the switching of the fourth triode N4 is controlled by a GPIO65 signal to control the laser lamp interface J3, so that the laser lamp is turned on only during video recording.

The 4G intelligent communication module is also communicated with the singlechip U3 through a prompt signal GPIO _1_ ZM3515, inputs high level to a P1.0 pin of the singlechip U3 and informs that the control of each lamp can be handed over by the 4G intelligent communication module. And the prompt signal GPIO _1_ ZM3515 can also control the switch of the first MOS tube Q1 by controlling the first triode N1, thereby controlling the floodlight externally connected to the functional light interface J2.

In further embodiments, the MCU control module 20 further includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6; one end of the first resistor R1 is connected with a P0.0 pin of the singlechip U3 and one end of the second resistor R2, the other end of the first resistor R1 is grounded, the other end of the second resistor R2 is connected with the 4G intelligent communication module, one end of the third resistor R3 is connected with a P1.0 pin of the singlechip U3 and one end of the fourth resistor R4, the other end of the third resistor R3 is grounded, the other end of the fourth resistor R4 is connected with the 4G intelligent communication module and the base of the first triode N1, one end of the fifth resistor R5 is connected with an FB pin of the first current control chip U1, the other end of the fifth resistor R5 is connected with a GND pin of the first current control chip U1 and the ground, one end of the sixth resistor R6 is connected with an FB pin of the second current control chip U2, and the other end of the sixth resistor R6 is connected with a GND pin and the ground of the second current control chip U2.

Through the voltage division of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4, the video state signal GPIO _3_ ZM3515 and the prompt signal GPIO _1_ ZM3515 input by the 4G intelligent communication module are more stable, and the current can be limited to avoid burning out the single chip microcomputer U3. The fifth resistor R5 and the sixth resistor R6 play a role of pulling down, so that the voltage can be pulled down to the ground when no FEEDBACK signal FEEDBACK is output, and error FEEDBACK is avoided.

In order to protect the first MOS transistor Q1 to the fourth MOS transistor Q4, a resistor may be further disposed between the gate of the first MOS transistor Q1 and the P2.5 pin of the single chip microcomputer, a resistor may be disposed between the gate of the first MOS transistor Q1 and the collector of the first transistor N1, a resistor may be disposed between the gate of the second MOS transistor Q2 and the P2.2 pin of the single chip microcomputer, a resistor may be disposed between the gate of the third MOS transistor Q3 and the P2.1 pin of the single chip microcomputer, and a resistor may be disposed between the gate of the fourth MOS transistor Q4 and the P2.0 pin of the single chip microcomputer. The resistor on the grid can avoid the MOS tube from being burnt out by large current.

In further embodiments, the MCU control module 20 further includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, and a fourteenth resistor R14; one end of the seventh resistor R7 is connected to one end of the eighth resistor R8 and the base of the second transistor N2, the other end of the seventh resistor R7 is connected to the 4G intelligent communication module, the other end of the eighth resistor R8 is connected to the emitter of the second transistor N2 and the ground, the ninth resistor R9 is connected between the collector of the second transistor N2 and the negative electrode of the photograph and video recording status indicator LEDP, one end of the tenth resistor R10 is connected to one end of the eleventh resistor R11 and the base of the third transistor N3, the other end of the tenth resistor R10 is connected to the 4G intelligent communication module, the other end of the eleventh resistor R11 is connected to the emitter of the third transistor N3 and the ground, the twelfth resistor R12 is connected between the collector of the third transistor N3 and the negative electrode of the battery charge status indicator LEDV, the thirteenth resistor R13 is connected between the base of the fourth transistor N4 and the 4G intelligent communication module, and the fourteenth resistor R4642 is connected between the collector of the fourth transistor N4 and the collector of the fourth pin of the battery charge status indicator LEDV 46.

The voltage division of the seventh resistor R7 and the eighth resistor R8, and the voltage division of the tenth resistor R10 and the eleventh resistor R11 ensure that the corresponding transistor is switched (turned on and off) stably. The current limiting of the ninth resistor R9 and the twelfth resistor R12 can protect the corresponding indicator lights. The thirteenth resistor R13 and the fourteenth resistor R14 are respectively used for protecting the fourth triode N4 and limiting the current to enable the output current of the laser lamp interface J3 to be more stable.

Referring to fig. 7, the charging module 30 includes a charging management chip U4, a first inductor L1, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4; the VBUS1 pin of the charging management chip U4 is connected with the VBUS2 pin, one end of the first capacitor C1 and a charging end (input charging power supply VBUS); the PMID pin of the charging management chip U4 is connected with the other end of the first capacitor C1 and the ground through the second capacitor C2, the PG/pin of the charging management chip U4 is connected with the 2 nd pin of the indicator lamp group LD, the STAT pin of the charging management chip U4 is connected with the 4 th pin of the indicator lamp group LD, the 1 st pin of the indicator lamp group LD is connected with the 3 rd pin and the power supply end (outputting the supply voltage VSYS) of the indicator lamp group LD, and the SDA pin and the SCL pin of the charging management chip U4 are both connected with the I2C bus (transmitting the SDA2 signal and the SCL2 signal) of the baseband chip in the 4G intelligent communication module; an INT pin of the charging management chip U4 is connected with a baseband chip (transmission interrupt signal EINT3) in the 4G intelligent communication module, and is also connected with a power supply end (VIO18_ PMU) through a seventeenth resistor R17, an OTG pin and a CE/pin of the charging management chip U4 are both connected with the 4G intelligent communication module, and a PSEL pin of the charging management chip U4 is grounded through a fifteenth resistor R15; a SW1 pin of the charging management chip U4 is connected with a SW2 of the charging management chip U4, one end of a first inductor L1 and one end of a fourth capacitor C4; the BTST pin of the charging management chip U4 is connected with the other end of the fourth capacitor C4; a SYS1 pin of the charging management chip U4 is connected with a SYS2 pin of the charging management chip U4, the other end of the first inductor L1, one end of the third capacitor C3 and a power supply end; the other end of the third capacitor C3 is grounded, a BAT1 pin of the charging management chip U4 is connected with a BAT2 pin and a battery end of the charging management chip U4, a TS pin of the charging management chip U4 is connected with a negative temperature coefficient thermistor of the battery through an eighteenth resistor R18, and an ILIM pin of the charging management chip U4 is grounded through a sixteenth resistor R16.

In this embodiment, the charging management device is a highly integrated switch mode battery charging management and system power path management device, and the charging management chip U4 with the model number HL7026/BQ24296 supports a 3.9V-6.2V USB input power, includes a standard USB host port and a USB charging port with a 6.4V overvoltage protection function, conforms to USB 2.0 and USB 3.0 power specifications, and has an input current and voltage regulation function.

The charging electricity flow of the charging module 30 is as follows: when the charger is plugged in, the charging power supply VBUS is supplied to the charging management chip U4. The baseband chip inside the 4G intelligent communication module 10 outputs the charging enable signal GPIO _102 to turn on the DE/pin (charging enable pin) of the charging management chip U4, and controls the charging switch through the DRVVBUS signal output by the baseband chip. The charge management chip U4 sets the maximum input current limit via the fifteenth resistor R15 connected to the PSEL pin. The sixteenth resistor R16 is a current limiting resistor for setting the actual charging current, and the charging current can also be set by software programming an internal register. The SCL2 and the SDA2 are I2C signals and are responsible for communication between the baseband chip and the charging management chip U4 in the 4G intelligent communication module.

After the charge management chip U4 detects the battery voltage VBAT of the battery end through the BAT1 pin and the BAT2 pin, the battery is automatically charged in three stages: pre-conditioning, constant current, and constant voltage. The pre-adjusted charging current may be set to 128mA-2048mA through internal register REG03, the constant current charging phase may be set to 512mA-3008mA through register REG02, and the charging voltage is set through register REG 04. At the end of the charging cycle, the charger is automatically terminated when the charging current is lower than the preset limit in the constant voltage phase. Thereafter, when the battery voltage drops below the recharge threshold, the charger will automatically initiate another charging cycle. The field effect transistor in the charging management chip outputs the power supply voltage VSYS of the battery voltage VBAT through the power supply end to supply power to the whole module.

The power path management of the charge management chip regulates the system voltage to be slightly above the battery voltage, but not drop below the 3.5V minimum system voltage (programmable). By virtue of this feature, the system remains operational even when the battery is completely depleted or the battery is removed. When the input source current or voltage limit is reached, the power path management automatically reduces the charging current to zero and then begins discharging the battery until the power requirements of the system are met. This charge mode operation may ensure that the input source is not overloaded.

The charge management chip U4 also provides various safety features for battery charging and system operation, including negative temperature coefficient thermistor connected to the battery through the TS pin of the charge management chip U4, i.e., battery temperature is monitored through the network VBAT _ ON1, charge timer set by the internal register REG05 and termination of the charging conditions to ensure charging safety, over-voltage/over-current protection. When the junction temperature of the charge management chip U4 itself exceeds 120 ℃ (settable), thermal regulation reduces the charging current.

The charging management chip U4 outputs reports the charging state and any fault condition, the PG/pin indicates power good, the STAT pin indicates the charging state, and the exterior is respectively connected with an LED indicator light which can synchronously display the corresponding state. When the state is normal, the voltage VIO18_ PMU on the power supply end can pull up the EINT3 signal to high level, and when a fault occurs, the interrupt signal EINT3 immediately outputs low level to a baseband chip in the 4G intelligent communication module.

The charging management chip U4 also has a quick start function and an accurate current limiting capability up to 1.5A, and when the USB device is detected to be inserted, the charging management chip U4 can provide 4.55V to 5.5V (default 5V) adjustable voltage for VBUS and support USB On-the-Go operation.

Referring to fig. 8 and 9 together, the audio module 40 includes an MIC circuit shown in fig. 8 and an audio power amplifier circuit shown in fig. 9.

The MIC circuit 410 in this embodiment includes a microphone MIC, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a nineteenth resistor R19, a twentieth resistor R20, a twentieth resistor R21, a twenty-second resistor R22, a first electrostatic protection diode ESD1, and a second electrostatic protection diode ESD 2; a 1 st pin of the microphone MIC is connected with one end of a first electrostatic protection diode ESD1, one end of an eleventh capacitor C11 and one end of a ninth capacitor C9; the 2 nd pin of the microphone MIC is connected with one end of a second electrostatic protection diode ESD2, one end of a tenth capacitor C10 and the other end of a ninth capacitor C9; the other end of the tenth capacitor C10 is connected with the other end of the eleventh capacitor C11 and the ground, and the 3 rd pin, the 4 th pin and the 5 th pin of the microphone MIC are all grounded; one end of the twentieth resistor R20 is connected with one end of a sixth capacitor C6 and one end of a ninth capacitor C9, the other end of the twentieth resistor R20 is connected with one end of a nineteenth resistor R19 and one end of an eighth capacitor C8, the other end of the nineteenth resistor R19 is connected with one end of a fifth capacitor C5 and a power chip (input direct-current bias voltage MICBIAS0) inside the 4G intelligent communication module, one end of the twentieth resistor R21 is connected with one end of a seventh capacitor C7 and one end of a tenth capacitor C10, the other end of the twentieth resistor R21 is connected with the other end of an eighth capacitor C8 and one end of a twenty-second resistor R22, and the other ends of the sixth capacitor C6 and the seventh capacitor C7 are both connected with an audio CODEC (audio CODEC); the other end of the twenty-second resistor R22, the other end of the fifth capacitor C5, the other end of the first electrostatic protection diode ESD1, and the other end of the second electrostatic protection diode ESD2 are all grounded.

The microphone MIC transmits the received voice signal to an audio chip inside the 4G intelligent communication module 10 through a differential network AU _ VIN0_ P and AU _ VIN0_ N, and the received voice signal is loaded on a carrier wave and transmitted through a 4G radio frequency antenna after sampling amplification, a/D conversion, PCM quantization and channel coding, thereby realizing the transmission of online voice. The 4G smart communications module provides a dc bias voltage MICBIAS0 to the differential circuit.

The audio power amplifier circuit 420 includes: the power amplifier comprises a power amplifier chip U5, a loudspeaker SPK, a first magnetic bead B1, a second magnetic bead B2, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15, a sixteenth capacitor C16, a twenty-third resistor R23 and a twenty-fourth resistor R24; the VDD pin of the power amplifier chip U5 is connected with a power supply end, the SHDN pin of the power amplifier chip U5 is connected with an AUDIO chip (transmitting an AUDIO _ EN signal) in the 4G intelligent communication module, the INP pin of the power amplifier chip U5 is connected with one end of a fourteenth capacitor C14 and one end of a twenty-third resistor R23, the other end of the twenty-third resistor R23 is connected with the AUDIO chip (transmitting an AUDIO signal AU _ HPL) in the 4G intelligent communication module through a twelfth capacitor C12, the INN pin of the power amplifier chip U5 is connected with the other end of a fourteenth capacitor C14 and one end of a twenty-fourth resistor R24, the other end of the twenty-fourth resistor R24 is grounded through a thirteenth capacitor C13, the VOP pin of the power amplifier chip U5 is connected with one end of a fifteenth capacitor C15 and the 1 st pin of a loudspeaker SPK through a first magnetic bead B1, the VON pin of the power amplifier chip U5 is connected with one end of a sixteenth capacitor C16 and the other end of the sixteenth capacitor C73727 through a second magnetic bead B366, the 3 rd pin and the 4 th pin of the horn SPK are both grounded.

In this embodiment, the power amplifier chip U5 employs a K-class power amplifier (model number is AW8733TQR/AW8733ATQR), with a special RF TDD noise suppression technique. After receiving the carrier signal loaded with voice, the 4G radio frequency antenna transmits the carrier signal to an audio chip in the 4G intelligent communication module, analog signals are amplified, mixed and demodulated out through low noise, the analog signals are output to a power amplifier chip U5 through an audio signal AU _ HPL and then are played out through a loudspeaker SPK, and therefore on-line voice receiving is achieved. The transmission and the reception of the online voice can be realized by connecting WiFi and utilizing APK.

The audio input signal AU _ HPL adopts a single-ended input virtual differential connection method, so that common-mode interference can be effectively inhibited. The twelfth capacitor C12 and the thirteenth capacitor C13 (both capacitors preferably 22nF) are used as input capacitors, and the twenty-third resistor R23 and the twenty-fourth resistor R24 are used as input resistors to form a high-pass filter for filtering out the dc component of the audio input signal AU _ HPL. The selection of a smaller input capacitance in the application helps to filter 217Hz noise coupled in from the input end, and the smaller capacitance is favorable for reducing pop-click sound when the power amplifier is turned on. The fourteenth capacitor C14, as an input differential filter capacitor, forms a low-pass filter with the input resistors R23 and R24 for attenuating the high-frequency component of the audio input signal AU _ HPL, so that when the sound of the music played by the speaker is sharp, a part of the high-frequency input signal can be properly attenuated to make the music signal soft and comfortable.

Supply voltage VSYS provides the power supply for K class power amplifier U5, its built-in twice charge pump circuit, in lithium cell voltage range, for inside power amplifier circuit provides 6.3V's high voltage rail, under 4.2V mains voltage, THD + N ═ 10% condition, can provide 2.0W's output to 8 omega's loudspeaker, allow the power amplifier to provide bigger output dynamic range, thereby realize the big volume, high-quality K class sound power amplifier broadcast effect.

The power amplifier chip U5 adopts a line pulse mode to control four working states, and selection of different gains and NCN sound-breaking-prevention modes is realized. The gain of the state 1 is 12dB, and the sound breaking prevention function is not provided; the gain of the state 2 is 16dB, and the sound breaking prevention function is started; the gain of the state 3 is 24dB, and the sound breaking prevention function is not provided; the gain of state 4 is 27.5dB and the anti-mute function is turned on.

The power amplifier chip U5 integrates a part of input resistors, and the amplification factor Av can be adjusted by changing the resistance values of the external input resistors R23 and R24. The SHDN pin of the power amplifier chip U5 selects the operating mode in a line pulse manner, and the number of rising edges of a line pulse signal (i.e., AUDIO _ EN) determines the operating mode of the power amplifier chip U5. When a signal of an SHDN pin is directly pulled high, namely a rising edge, a power amplifier chip U5 starts to work, and Av is 4V/V; when the SHDN pin is heightened → low → high pulse signal, namely two rising edges, the power amplifier chip U5 enters the anti-break mode to work and the gain rises to Av ═ 6V/V; when the SHDN receives three rising edges, the Av is 16V/V, and no sound breaking prevention exists; the SHDN pin receives four rising edges, and the Av is 24V/V, so that the sound breaking prevention function is started. The first line pulse is controlled in a cyclic manner, that is, if the SHDN pin receives five rising edges, the first operating state is entered, and if the SHDN pin receives six rising edges, the second operating state is entered, and so on.

The loudspeaker SPK also adopts a differential structure, the output magnetic beads (B1, B2) and the output capacitors (C15, C16) form a filter circuit together, the magnetic beads can effectively reduce EMI and output noise, and the small capacitors (the capacitance value of C15 and C16 is preferably 1nF) can further reduce RF TDD noise.

In specific implementation, an electrostatic protection diode may be disposed between the 1 st pin of the speaker SPK and the ground, and between the 2 nd pin and the ground, respectively, to prevent static electricity. A capacitor is arranged between a VDD pin and a GND pin of the power amplifier chip U5 to filter the supply voltage VSYS, so that the power amplifier chip U5 works more stably.

In summary, the flashlight control device with wireless communication and the multifunctional inspection flashlight thereof provided by the invention have the advantages that on the basis of having the basic functions of illumination, camera shooting, photographing, recording and the like, the 4G, WiFi and BT wireless communication functions and the GPS positioning function are added, so that the wireless uplink audio and video can be positioned in real time, the inspection condition can be conveniently and instantly mastered by combining with the online voice talkback, and the use of a user under various conditions is facilitated.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A flashlight control device with wireless communication is characterized by comprising a 4G intelligent communication module, an MCU control module, a charging module, an audio module and a key control module;

the key control module outputs corresponding switch signals, lamp control signals and function signals according to key operation; the 4G intelligent communication module performs on-off control according to the on-off signal, acquires the current GPS positioning information in real time and wirelessly uploads the information to the remote control end; the MCU control module and the 4G intelligent communication module control the on and off of corresponding lamps according to the lamp control signals and execute corresponding functional operation according to the functional signals; the audio module collects voice signals, processes the voice signals through the 4G intelligent communication module and then wirelessly uploads the voice signals to the remote control terminal; the 4G intelligent communication module receives the carrier signal loaded with the voice and sent by the remote control end, processes and demodulates the carrier signal into an analog signal, and the analog signal is amplified by the audio module and then played; the 4G intelligent communication module controls the charging state and parameter setting of the charging module; the charging module converts a charging power supply into charging current for charging, performs charging state indication, and supplies power to the MCU control module and the audio module;

the MCU control module comprises a spotlight interface, a function lamp interface, a laser lamp interface, a first current control chip, a second current control chip, a single chip microcomputer, a first MOS (metal oxide semiconductor) tube, a second MOS tube, a third MOS tube, a fourth MOS tube, a first triode, a second triode, a third triode, a fourth triode, a video recording state indicator lamp and a battery electric quantity state indicator lamp;

2. The flashlight control device with wireless communication of claim 1, wherein the 4G intelligent communication module is ZM 3515; an antenna pin is pulled out by a 4G radio frequency module in the 4G intelligent communication module and is connected with a 4G main antenna and a 4G diversity antenna, and a corresponding antenna pin is pulled out by a WiFi/BT/GPS chip in the 4G intelligent communication module and is respectively connected with a GPS antenna and the WiFi/BT antenna.

3. The flashlight control device of claim 2, wherein the key control module comprises a power-on key, a green light key, a red light key, an illumination key, a confirmation key, a left key, a right key, a return key, a photographing key, and a recording key;

4. The flashlight control device of claim 3, wherein the MCU control module further comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor;

5. The flashlight control device of claim 4, wherein the MCU control module further comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a fourteenth resistor;

6. The flashlight control device of claim 5, wherein the charging module comprises a charging management chip, a first inductor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a first capacitor, a second capacitor, a third capacitor and a fourth capacitor;

a VBUS1 pin of the charging management chip is connected with a VBUS2 pin, one end of the first capacitor and the charging end; the PMID pin of the charging management chip is connected with the other end of the first capacitor and the ground through the second capacitor, the PG/pin of the charging management chip is connected with the 2 nd pin of the indicator lamp group, the STAT pin of the charging management chip is connected with the 4 th pin of the indicator lamp group, the 1 st pin of the indicator lamp group is connected with the 3 rd pin and the power supply end of the indicator lamp group, and the SDA pin and the SCL pin of the charging management chip are both connected with the 4G intelligent communication module; the INT pin of the charging management chip is connected with the 4G intelligent communication module and is also connected with a power supply end through a seventeenth resistor, the OTG pin and the CE/pin of the charging management chip are both connected with the 4G intelligent communication module, and the PSEL pin of the charging management chip is grounded through a fifteenth resistor; the SW1 pin of the charging management chip is connected with the SW2 pin of the charging management chip, one end of the first inductor and one end of the fourth capacitor; the BTST pin of the charging management chip is connected with the other end of the fourth capacitor; an SYS1 pin of the charging management chip is connected with an SYS2 pin of the charging management chip, the other end of the first inductor, one end of the third capacitor and a power supply end; the other end of the third capacitor is grounded, a BAT1 pin of the charging management chip is connected with a BAT2 pin and a battery end of the charging management chip, a TS pin of the charging management chip is connected with a negative temperature coefficient thermistor of the battery through an eighteenth resistor, and an ILIM pin of the charging management chip is grounded through a sixteenth resistor.

7. The flashlight control device of claim 6, wherein the MIC circuit of the audio module comprises a microphone, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a first ESD diode, and a second ESD diode;

a 1 st pin of the microphone is connected with one end of a first electrostatic protection diode, one end of an eleventh capacitor and one end of a ninth capacitor; a2 nd pin of the microphone is connected with one end of the second electrostatic protection diode, one end of the tenth capacitor and the other end of the ninth capacitor; the other end of the tenth capacitor is connected with the other end of the eleventh capacitor and the ground, and a pin 3, a pin 4 and a pin 5 of the microphone are all grounded; one end of the twentieth resistor is connected with one end of the sixth capacitor and one end of the ninth capacitor, the other end of the twentieth resistor is connected with one end of the nineteenth resistor and one end of the eighth capacitor, the other end of the nineteenth resistor is connected with one end of the fifth capacitor and the 4G intelligent communication module, one end of the twenty-first resistor is connected with one end of the seventh capacitor and one end of the tenth capacitor, the other end of the twenty-first resistor is connected with the other end of the eighth capacitor and one end of the twenty-second resistor, and the other end of the sixth capacitor and the other end of the seventh capacitor are both connected with the audio codec; the other end of the twenty-second resistor, the other end of the fifth capacitor, the other end of the first electrostatic protection diode and the other end of the second electrostatic protection diode are all grounded.

8. The flashlight control device of claim 7, wherein the audio module audio power amplifier circuit comprises: the power amplifier comprises a power amplifier chip, a loudspeaker, a first magnetic bead, a second magnetic bead, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor, a sixteenth capacitor, a twenty-third resistor and a twenty-fourth resistor;

the power supply end is connected to the VDD foot of power amplifier chip, 4G intelligent communication module is connected to the SHDN foot of power amplifier chip, the one end of fourteenth electric capacity and the one end of twenty-third resistance are connected to the INP foot of power amplifier chip, the other end of twenty-third resistance passes through twelfth electric capacity and connects 4G intelligent communication module, the other end of fourteenth electric capacity and the one end of twenty-fourth resistance are connected to the INN foot of power amplifier chip, the other end of twenty-fourth resistance passes through thirteenth electric capacity ground connection, the VOP foot of power amplifier chip passes through the one end of first magnetic bead connection fifteenth electric capacity and the 1 st foot of loudspeaker, the VON foot of power amplifier chip passes through the one end of second magnetic bead connection sixteenth electric capacity and the 2 nd foot of loudspeaker, the other end and the ground of sixteenth electric capacity are connected to the other end of fifteenth electric capacity, the 3 rd foot and the 4 th foot.

9. A wireless communication multifunctional patrol inspection flashlight comprises a spotlight, a floodlight, a red signal lamp, a green signal lamp, a laser lamp and a battery, and is characterized by further comprising a wireless communication flashlight control device according to any one of claims 1-8;