Multi-path power supply multifunctional driving recording and monitoring system

Abstract

The utility model provides a multi-path power supply multifunctional driving recording and monitoring system, which is characterized by comprising a power supply system, a monitoring system, a master control system and a functional system, and the power supply system comprises a vehicle-mounted power supply input circuit, a solar charging circuit, a storage battery, a power supply output circuit and a step-down circuit. The storage battery is further electrically connected with a voltage detection circuit, and the solar charging circuit and the power output circuit are electrically connected with a power control management circuit. The monitoring system comprises a camera connecting circuit, an image processing circuit and a monitoring information storage circuit; the main control system comprises a main control circuit, a voltage conversion circuit, a dominant frequency crystal oscillator circuit and a clock crystal oscillator circuit; the function system comprises a vibration sensing module, a GPS positioning module, a wireless communication module and a display screen module. The automobile data recorder can monitor the parking safety of an automobile in real time, can operate independently for a long time, and has an abnormal condition remote alarm function.

Description

Technical field

[0001] The utility model relates to the technical field of vehicle driving recorders, in particular to a multifunctional vehicle driving record monitoring system with multi-path power supply. [Background Technology]

[0002] A driving recorder is a vehicle monitoring and recording system that can record video images of a car's driving process and is mainly used to provide evidence for traffic accidents.

[0003] Existing dashcams rely primarily on internal batteries or power generated by the vehicle's engine. When the engine stops, existing dashcams struggle to maintain continuous operation for extended periods, resulting in insufficient battery life and unsuitable for home or parking surveillance. If a vehicle is parked outdoors, without cameras monitoring it, ensuring vehicle safety becomes difficult. Furthermore, most existing dashcams only offer limited functionality for recording the vehicle, making them unable to locate and monitor the vehicle in real time. This makes it difficult to promptly notify users of any abnormalities in a parked vehicle, making it difficult to meet user needs.

[0004] In order to monitor the parking safety of vehicles in real time, enable the driving recorder to operate independently for a long time, and enable the driving recorder to have a remote alarm function for abnormal situations, the utility model has developed a multifunctional driving record monitoring system with multi-channel power supply. [Utility Model Content]

[0005] In order to monitor the parking safety of vehicles in real time, enable the driving recorder to operate independently for a long time, and enable the driving recorder to have a remote alarm function for abnormal situations, the utility model has developed a multifunctional driving record monitoring system with multi-channel power supply.

[0006] In order to solve the above problems, the present invention provides the following technical solutions:

[0007] A multifunctional driving record monitoring system with multi-channel power supply is characterized in that it includes a power supply system, a monitoring system, a main control system and a functional system. The power supply system includes a vehicle-mounted power input circuit, a solar charging circuit, a battery, a power output circuit and a step-down circuit. The output ends of the solar charging circuit and the vehicle-mounted power input circuit are both electrically connected to the battery, the battery is electrically connected to the input end of the power output circuit, and the output end of the power output circuit is electrically connected to the step-down circuit. The battery is also electrically connected to a voltage detection circuit for detecting the battery voltage, and the solar charging circuit and the power output circuit are electrically connected to a power control management circuit for controlling the operation of the power supply system according to the feedback signal of the voltage detection circuit; the monitoring system includes a camera connection circuit, an image processing circuit and a monitoring information storage circuit; the main control system includes a main control circuit, a voltage conversion circuit, a main frequency crystal oscillator circuit and a clock crystal oscillator circuit; the functional system includes a vibration sensing module, a GPS positioning module, a wireless communication module and a display screen module.

[0008] The multifunctional driving record monitoring system with multi-channel power supply as described above is characterized in that: the power control management circuit includes a control chip U1 and a voltage regulator chip U2, the output terminal BAT of the battery + the series resistor R1 is electrically connected to the input terminal VIN of the voltage regulator chip U2, the output terminal VOUT of the voltage regulator chip U2 is electrically connected to pin 1 of the control chip U1, the pin 4 of the control chip U1 is electrically connected to the control signal input terminal SOLAR_SW of the solar charging circuit, the pin 5 of the control chip U1 is electrically connected to one end of the capacitor C3 and one end of the resistor R11 respectively, the other end of the capacitor C3 is grounded, and the other end of the resistor R11 is electrically connected to the voltage detection circuit The output terminal AD_VOL of the control chip U1 is electrically connected, the pin 6 of the control chip U1 is electrically connected to the control signal input terminal VOT_SW of the power output circuit, the pin 7 of the control chip U1 is electrically connected to the key switch SW1 for manually controlling the on and off operation of the power supply, and the pin 8 of the control chip U1 is grounded; the voltage detection circuit includes a sampling resistor R7 and a sampling resistor R9, one end of the sampling resistor R7 is electrically connected to the output terminal BAT+ of the battery, the other end of the sampling resistor R7 is connected in series with the sampling resistor R9 and then grounded, and the connection end of the sampling resistor R7 and the sampling resistor R9 is the output terminal AD_VOL of the voltage detection circuit and is electrically connected to the power control management circuit.

[0009] The multifunctional driving recorder monitoring system with multi-channel power supply as described above is characterized in that: the vehicle-mounted power input circuit mainly includes an interface J1 for connecting to the cigarette lighter power connector in the car, a charging control chip U3 for stabilizing current output, a rectifier chip U6 for preliminary rectification and filtering, a rectifier chip U4 for adjusting the current size and a rectifier chip U5 for preventing the battery from backflowing from the charging control chip U3. Pins 5, 6, 7 and 8 of the rectifier chip U5 are connected in series and electrically connected to the battery as an output end.

[0010] The multifunctional driving recorder and monitoring system with multiple power supply paths as described above is characterized in that: the solar charging circuit includes a solar charging panel, a connection port J1, a MOS transistor Q1, and a transistor Q2. The connection port J1 is electrically connected to the solar charging panel, pin 1 of the connection port J1 is grounded, and pin 2 is electrically connected to the positive electrode of the diode D1. The negative electrode of the diode D1 is connected in series with a capacitor C4 and then to ground. The negative electrode of the diode D1 is connected in series with a resistor R10 and then electrically connected to the source S of the MOS transistor Q1. The drain D of the MOS transistor Q1 is electrically connected to the battery. A resistor R2 is connected in series between the gate G and source S of the MOS transistor Q1. The gate G of the MOS transistor Q1 is connected in series with a resistor R3 and then electrically connected to the collector of the transistor Q2. The emitter of the transistor Q2 is grounded. The base of the transistor Q2 is connected in series with a resistor R8 and then serves as a control signal input terminal SOLAR_SW of the solar charging circuit and is electrically connected to the power control management circuit.

[0011] The multifunctional vehicle driving recorder and monitoring system with multiple power supply paths as described above is characterized in that: the power output circuit includes a MOS transistor Q3 and a transistor Q4. The source S of the MOS transistor Q3 is electrically connected to the battery. The drain D of the MOS transistor Q3 serves as the output terminal VOUT of the power output circuit and is electrically connected to the input terminal DC+ of the step-down circuit. A resistor R5 is connected in series between the gate G and source S of the MOS transistor Q3. The gate G of the MOS transistor Q3 is connected in series with the resistor R4 and then electrically connected to the collector of the transistor Q4. The emitter of the transistor Q4 is grounded. The base of the transistor Q4 is connected in series with the resistor R6 and then serves as the control signal input terminal VOT_SW of the power output circuit and is electrically connected to the power control management circuit.

[0012] The multifunctional driving record monitoring system with multi-channel power supply as described above is characterized in that: the camera connection circuit includes a front recording camera connection circuit for connecting to the front camera, an internal recording camera connection circuit and a rear recording camera connection circuit; the image processing circuit includes a front recording processing circuit, an internal recording and a rear recording processing circuit; the monitoring information storage circuit includes an organic internal flash memory circuit and an SD card storage circuit.

[0013] The multifunctional driving recorder monitoring system with multi-channel power supply as described above is characterized in that: the main control circuit includes a main control IC, and the voltage conversion circuit, the main frequency crystal oscillator circuit, the clock crystal oscillator circuit, the monitoring system and the functional system are all electrically connected to the main control circuit.

[0014] The multifunctional driving recorder and monitoring system with multi-path power supply as described above is characterized in that the wireless communication module includes a network connection circuit and a SIM card communication circuit, and the display screen module includes a display screen control circuit and a touch screen control circuit.

[0015] The multifunctional vehicle driving recorder and monitoring system with multi-path power supply as described above is characterized in that the functional system further includes a key control circuit, a voice input circuit and an audio power amplifier circuit.

[0016] The multifunctional driving recorder and monitoring system with multi-path power supply as described above is characterized in that the main control circuit is also electrically connected to a parking detection circuit for detecting the vehicle status so as to switch the system to a low power consumption state after parking.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The multifunctional driving record monitoring system of the utility model is powered by multiple channels. When the engine is started, the battery can be charged through the cigarette lighter interface on the vehicle. When there is light, the battery can be charged through the solar charging panel. The battery itself has a strong endurance and can continuously power the driving record monitoring system for 2 to 3 days. When the vehicle is driving or parked in an open environment, the battery can be quickly charged to keep the battery in a high power state, thereby extending the battery life of the driving record monitoring system, allowing the driving record monitoring system to operate independently for a long time to perform journey recording and parking monitoring. It can also be used as a home monitoring system to effectively ensure vehicle parking safety.

[0019] 2. The utility model is a multifunctional driving record monitoring system with multi-channel power supply. It is equipped with a front camera, an interior camera and a rear camera. The front camera and the rear camera can be set as infrared cameras for convenient use at night. The interior camera can be set as a thermal imaging camera. It detects the thermal radiation of objects to determine whether there is thermal radiation from human bodies or pets in the car and trunk after parking for a period of time. If dynamic thermal radiation information is detected, an alarm will be immediately sent to the user's mobile phone, thereby effectively preventing children or pets from being locked in the car for a long time.

[0020] 3. The multifunctional driving recorder monitoring system with multi-channel power supply of the utility model is equipped with a GPS positioning module capable of real-time positioning and a wireless communication module capable of connecting to the network, so that users can locate the vehicle position in real time and view monitoring image information inside and outside the vehicle. At the same time, the vibration sensor module can sense relatively strong vehicle vibrations. When a parked vehicle collides or someone hits the vehicle hard, the vibration sensor module senses the vehicle vibration and generates a trigger signal. After the main control circuit detects the trigger signal, it sends an alarm to the user's mobile phone through the wireless communication module, notifying the user to take timely action, so that the system enables the driving recorder to have a remote alarm function for abnormal situations.

Brief Description of the Drawings

[0021] Figure 1 This is the structural diagram of the driving record monitoring system;

[0022] Figure 2 It is the circuit schematic diagram of the power control management circuit;

[0023] Figure 3 This is the circuit diagram of the solar charging circuit;

[0024] Figure 4 This is the circuit schematic diagram of the vehicle power input circuit;

[0025] Figure 5 It is the circuit schematic diagram of the step-down circuit;

[0026] Figure 6 This is the circuit schematic diagram of the main control circuit;

[0027] Figure 7 This is the circuit schematic diagram of the camera connection circuit;

[0028] Figure 8 This is the circuit schematic diagram of the image processing circuit;

[0029] Figure 9 It is a circuit schematic diagram of a monitoring information storage circuit;

[0030] Figure 10 This is the circuit schematic diagram of the vibration sensor module;

[0031] Figure 11 This is the circuit schematic diagram of the GPS positioning module;

[0032] Figure 12 This is the circuit schematic diagram of the wireless communication module;

[0033] Figure 13 This is the circuit schematic diagram of the display module;

[0034] Figure 14 This is the circuit schematic diagram of the key control circuit;

[0035] Figure 15 It is the circuit schematic diagram of the voice input circuit and audio power amplifier circuit;

[0036] Figure 16 This is the circuit schematic diagram of the parking detection circuit;

[0037] In the figure: 1 is the vehicle power input circuit; 2 is the solar charging circuit; 3 is the battery; 4 is the power output circuit; 5 is the voltage detection circuit; 6 is the power control management circuit; 7 is the step-down circuit; 8 is the camera connection circuit; 9 is the front recording camera connection circuit; 10 is the internal recording camera connection circuit; 11 is the rear recording camera connection circuit; 12 is the image processing circuit; 13 is the front recording processing circuit; 14 is the internal and rear recording processing circuit; 15 is the monitoring information storage circuit; 16 is the internal flash memory circuit; 17 is the SD card storage circuit; 18 is the main control circuit; 19 is the voltage conversion circuit; 20 is the main frequency crystal oscillator circuit; 21 is the clock crystal oscillator circuit; 22 is the vibration sensor module; 23 is the GPS positioning module; 24 is the wireless communication module; 25 is the network connection circuit; 26 is the SIM card communication circuit; 27 is the display module; 28 is the display control circuit; 29 is the touch screen control circuit; 30 is the key control circuit; 31 is the voice input circuit; 32 is the audio power amplifier circuit; 33 is the parking detection circuit. [Specific implementation method]

[0038] The technical features of the present invention are further described in detail below with reference to the accompanying drawings so that those skilled in the art can understand them.

[0039] A multifunctional driving record monitoring system with multi-channel power supply, such as Figures 1 to 16 As shown, it includes a power supply system, a monitoring system, a main control system and a functional system. The power supply system includes a vehicle-mounted power input circuit 1, a solar charging circuit 2, a battery 3, a power output circuit 4 and a step-down circuit 7. The output ends of the solar charging circuit 2 and the vehicle-mounted power input circuit 1 are electrically connected to the battery 3, the battery 3 is electrically connected to the input end of the power output circuit 4, and the output end of the power output circuit 4 is electrically connected to the step-down circuit 7. The battery 3 is also electrically connected to a voltage detection circuit 5 for detecting the battery voltage. The solar charging circuit 2 and the power output circuit 4 are electrically connected to a power control management circuit 6 for controlling the operation of the power supply system according to the feedback signal of the voltage detection circuit 5; the monitoring system includes a camera connection circuit 8, an image processing circuit 12 and a monitoring information storage circuit 15; the main control system includes a main control circuit 18, a voltage conversion circuit 19, a main frequency crystal oscillator circuit 20 and a clock crystal oscillator circuit 21; the functional system includes a vibration sensor module 22, a GPS positioning module 23, a wireless communication module 24 and a display screen module 27;

[0040] The driving record monitoring system is independent of the vehicle's circuit system and is applicable to most models. The battery 3 is a lead-acid energy storage explosion-proof battery, which is safer and more stable than a lithium battery. It can ensure the safety of battery use even at higher temperatures. The battery 3 can be installed in the trunk of the vehicle and can be charged through the cigarette lighter interface on the vehicle when the engine is started. In the presence of sunlight, the battery 3 can be charged through a solar charging panel. At the same time, the battery 3 itself has a strong endurance and can continuously power the driving record monitoring system for 2 to 3 days. When the vehicle is driving or staying in an open air environment, the battery can be quickly charged to keep the battery in a high power state, thereby extending the battery life of the driving record monitoring system, so that the driving record monitoring system can operate independently for a long time to perform journey recording and parking monitoring. It can also be used as a home monitoring system to effectively ensure vehicle parking safety.

[0041] Moreover, the GPS positioning module 23 is a socket connection circuit electrically connected to a GPS dedicated module. After being connected to the GPS module, it can perform real-time positioning functions. The wireless communication module 24 can connect to the network and the user's mobile phone, so that the user can locate the vehicle position in real time and view the monitoring image information inside and outside the vehicle. At the same time, the vibration sensor module 22 can sense relatively strong vehicle vibrations. When a parked vehicle collides or someone hits the vehicle hard, the vibration sensor module 22 senses the vehicle vibration and generates a trigger signal. After the main control circuit 18 detects the trigger signal, it sends an alarm to the user's mobile phone through the wireless communication module 24, notifying the user to take timely action, so that the system enables the driving recorder to have a remote alarm function for abnormal situations.

[0042] Specifically, the power control management circuit 6 includes a control chip U1 and a voltage regulator chip U2. The output terminal BAT of the battery 3 is connected in series with a resistor R1 and is electrically connected to the input terminal VIN of the voltage regulator chip U2. The output terminal VOUT of the voltage regulator chip U2 is electrically connected to pin 1 of the control chip U1. Pin 4 of the control chip U1 is electrically connected to the control signal input terminal SOLAR_SW of the solar charging circuit 2. Pin 5 of the control chip U1 is electrically connected to one end of the capacitor C3 and one end of the resistor R11 respectively. The other end of the capacitor C3 is grounded, and the other end of the resistor R11 is electrically connected to the output terminal AD_VOL of the voltage detection circuit 5. Pin 6 of the control chip U1 is electrically connected to the control signal input terminal VOT_SW of the power output circuit 4, pin 7 of the control chip U1 is electrically connected to the key switch SW1 for manually controlling the power on and off operation, and pin 8 of the control chip U1 is grounded; in addition, the voltage detection circuit 5 includes a sampling resistor R7 and a sampling resistor R9, one end of the sampling resistor R7 is electrically connected to the output terminal BAT+ of the battery 3, and the other end of the sampling resistor R7 is connected in series with the sampling resistor R9 and then grounded. The connection end of the sampling resistor R7 and the sampling resistor R9 is the output terminal AD_VOL of the voltage detection circuit 5 and is electrically connected to the power control management circuit 6.

[0043] Specifically, such as Figure 4 As shown, the vehicle power input circuit 1 mainly includes an interface J1 for connecting to the power connector of the cigarette lighter in the car, a charging control chip U3 for stabilizing current output, a rectifier chip U6 for preliminary rectification and filtering, a rectifier chip U4 for adjusting the current size, and a rectifier chip U5 for preventing the battery 3 from backflowing into the charging control chip U3. The model of the charging control chip U3 is CN3717. Pins 5, 6, 7 and 8 of the rectifier chip U5 are connected in series and electrically connected to the battery 3 as an output end; the output end voltage range of the vehicle power input circuit 1 is 14V~14.5V, and the operating voltage range of the battery 3 is 10.3V~14.8V. When the battery 3 is fully charged, its voltage value is close to the output end voltage of the vehicle power input circuit 1, and the vehicle power input circuit 1 gradually stops charging the battery 3. At the same time, the rectifier chip U5 can prevent the current of the battery 3 from backflowing into the vehicle power input circuit 1 to avoid damaging the charging control chip U3.

[0044] Specifically, the solar charging circuit 2 includes a connection port J1, a MOS transistor Q1, and a transistor Q2. The connection port J1 is electrically connected to the solar charging panel, a pin 1 of the connection port J1 is grounded, and a pin 2 is electrically connected to the positive electrode of the diode D1. The negative electrode of the diode D1 is connected in series with a capacitor C4 and then to ground. The negative electrode of the diode D1 is connected in series with a resistor R10 and then electrically connected to the source S of the MOS transistor Q1. The drain D of the MOS transistor Q1 is electrically connected to the battery 3. A resistor R2 is connected in series between the gate G and the source S of the MOS transistor Q1. The gate G of the MOS transistor Q1 is connected in series with a resistor R3 and then electrically connected to the collector of the transistor Q2. The emitter of the transistor Q2 is grounded. The base of the transistor Q2 is connected in series with a resistor R8 and then serves as the control signal input terminal SOLAR_SW of the solar charging circuit 2 and is electrically connected to the power control management circuit 6.

[0045] Specifically, the solar charging panel is a flexible or semi-flexible solar charging panel, which is convenient for laminating with the glass of the vehicle during installation. The solar charging panel is installed on the top sunroof or rear windshield in the vehicle by gluing. The solar charging panel is installed inside the vehicle to prevent external damage and dust deposition. When the output voltage of the solar charging panel is greater than the actual voltage of the battery 3, and at the same time, the voltage detection circuit 5 detects that the voltage of the battery 3 is lower than 13.8V, the pin 4 of the power control management circuit 6 outputs a high-level signal to the control signal input terminal SOLAR_SW of the solar charging circuit 2. At this time, the transistor Q2 is turned on, the gate G of the MOS tube Q1 is high, the MOS tube Q1 is turned on, and the solar charging panel starts to charge the battery 3. When the voltage detection circuit 5 detects that the voltage of the battery 3 is higher than 14.2V, the pin 4 of the power control management circuit 6 outputs a low-level signal to the control signal input terminal SOLAR_SW of the solar charging circuit 2. At this time, the transistor Q2 is turned off, the MOS tube Q1 is turned off, and the solar charging panel stops charging the battery 3.

[0046] In addition, when the voltage detection circuit 5 detects that the voltage of the battery 3 is lower than 10.3V, the driving record monitoring system stops working. When the solar charging panel charges the battery 3, the output voltage of the solar charging panel is greater than the actual voltage of the battery 3 at that time, but cannot exceed the rated charging voltage of the battery 3. The maximum output voltage of the solar charging panel is 24V. The greater the difference between the output voltage of the solar charging panel and the actual voltage of the battery 3, the faster the charging. Moreover, the charging threshold is set to 13.8V~14.2V in order to maintain the stability of the output voltage of the battery 3 and prevent the power in the battery 3 from being too saturated, which affects the service life of the battery 3.

[0047] In addition, the power output circuit 4 includes a MOS transistor Q3 and a transistor Q4. The source S of the MOS transistor Q3 is electrically connected to the battery 3. The drain D of the MOS transistor Q3 serves as the output terminal VOUT of the power output circuit 4 and is electrically connected to the input terminal DC+ of the step-down circuit 7. A resistor R5 is connected in series between the gate G and the source S of the MOS transistor Q3. The gate G of the MOS transistor Q3 is connected in series with the resistor R4 and then electrically connected to the collector of the transistor Q4. The emitter of the transistor Q4 is grounded. The base of the transistor Q4 is connected in series with the resistor R6 and then serves as the control signal input terminal VOT_SW of the power output circuit 4 and is electrically connected to the power control management circuit 6. When the voltage detection circuit 5 detects that the battery 3 is fully charged and the user presses the key switch SW1, the pin of the power control management circuit 6 is 6 outputs a high-level signal to the control signal input terminal VOT_SW of the power output circuit 4. At this time, the transistor Q4 is turned on, the gate G of the MOS transistor Q3 is at a high level, the MOS transistor Q3 is turned on, and the current of the battery 3 flows from the source S of the MOS transistor Q3 to the drain D and is output to the input terminal DC+ of the step-down circuit 7. The step-down circuit 7 converts the voltage of the battery 3 (10.3V to 14.8V) into a 5V voltage output to power the entire system. When the push switch SW1 is pressed again or the voltage of the battery 3 is lower than 10.3V, the pin 6 of the power control management circuit 6 outputs a low-level signal to the control signal input terminal VOT_SW of the power output circuit 4. At this time, the transistor Q4 is turned off, the MOS transistor Q3 is turned off, and the driving record monitoring system stops working.

[0048] Specifically, the camera connection circuit 8 includes a front recording camera connection circuit 9 for connecting to the front camera, an internal recording camera connection circuit 10 and a rear recording camera connection circuit 11, the image processing circuit 12 includes a front recording processing circuit 13, an internal recording and rear recording processing circuit 14, and the monitoring information storage circuit 15 includes an organic internal flash memory circuit 16 and an SD card storage circuit 17; the front camera and the rear camera can be set as infrared cameras for convenient use at night, and the internal camera can be set as a thermal imaging camera. By detecting the thermal radiation of the object, it is determined whether there is thermal radiation from a human body or pet in the car and the trunk after parking for a period of time. If dynamic thermal radiation information is detected, an alarm is immediately sent to the user's mobile phone, thereby effectively preventing children or pets from being locked in the car for a long time.

[0049] Specifically, the main control circuit 18 includes a main control IC, whose model is SSC8826Q. The voltage conversion circuit 19, the main frequency crystal oscillator circuit 20, the clock crystal oscillator circuit 21, and the monitoring system and functional system are all electrically connected to the main control circuit 18.

[0050] Specifically, the wireless communication module 24 includes a network connection circuit 25 and a SIM card communication circuit 26, and the display screen module 27 includes a display screen control circuit 28 and a touch screen control circuit 29. When the parking detection circuit 33 detects that the vehicle is turned off, the display screen module 27 automatically stops working.

[0051] In addition, the functional system also includes a button control circuit 30, a voice input circuit 31 and an audio power amplifier circuit 32. The button control circuit 30 and the touch screen control circuit 29 have the same function. The user can set the functional parameters of the system in two ways. The voice input circuit 31 and the audio power amplifier circuit 32 can be combined to realize the voice control function. After waking up the driving recorder through conversation, other functions of the driving recorder can be controlled by voice.

[0052] In addition, the main control circuit 18 is also electrically connected to a parking detection circuit 33 for detecting the vehicle status so that the system switches to a low-power state after parking. The parking detection circuit 33 is electrically connected to the USB socket circuit in the vehicle. When the vehicle is turned off and the instrument panel power is turned off, the input voltage of the parking detection circuit 33 is 0V. At this time, the main control circuit 18 controls the display screen module 27 to stop working and the driving recorder turns off the screen. At the same time, the main control circuit 18 switches the monitoring system from real-time recording mode to time-lapse recording mode to reduce power consumption and extend the battery life of the system.

[0053] The embodiments described in the present invention are merely descriptions of preferred implementation methods of the present invention and are not limited to the precise structures described above and shown in the accompanying drawings. Various modifications and changes can be made without departing from the scope thereof. Without departing from the design concept of the present invention, various variations and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the scope of protection of the present invention.

Claims

1. A multifunctional vehicle driving record monitoring system with multi-channel power supply, characterized by: The invention comprises a power supply system, a monitoring system, a main control system and a functional system. The power supply system comprises an on-board power input circuit (1), a solar charging circuit (2), a storage battery (3), a power output circuit (4) and a step-down circuit (7). The output ends of the solar charging circuit (2) and the on-board power input circuit (1) are both electrically connected to the storage battery (3). The storage battery (3) is electrically connected to the input end of the power output circuit (4). The output end of the power output circuit (4) is electrically connected to the step-down circuit (7). The storage battery (3) is also electrically connected to a voltage detection circuit (5) for detecting the battery voltage. The solar charging circuit (2) and the power output circuit (4) are electrically connected to the step-down circuit (7). The power supply control management circuit (6) is used to control the operation of the power supply system according to the feedback signal of the voltage detection circuit (5); the monitoring system includes a camera connection circuit (8), an image processing circuit (12) and a monitoring information storage circuit (15); the main control system includes a main control circuit (18), a voltage conversion circuit (19), a main frequency crystal oscillator circuit (20) and a clock crystal oscillator circuit (21); the functional system includes a vibration sensor module (22), a GPS positioning module (23), a wireless communication module (24) and a display screen module (27), and the functional system also includes a key control circuit (30), a voice input circuit (31) and an audio power amplifier circuit (32). The main control circuit (18) is also electrically connected to a detection circuit (31). The parking detection circuit (33) detects the vehicle state so that the system switches to a low power consumption state after parking; the power control management circuit (6) includes a control chip U1 and a voltage stabilizing chip U2, the output terminal BAT of the battery (3) is connected in series with a resistor R1 and then electrically connected to the input terminal VIN of the voltage stabilizing chip U2, the output terminal VOUT of the voltage stabilizing chip U2 is electrically connected to pin 1 of the control chip U1, the pin 4 of the control chip U1 is electrically connected to the control signal input terminal SOLAR_SW of the solar charging circuit (2), the pin 5 of the control chip U1 is electrically connected to one end of the capacitor C3 and one end of the resistor R11, the other end of the capacitor C3 is grounded, and the other end of the resistor R11 is electrically connected to the voltage detection circuit (5 ) is electrically connected to the output terminal AD_VOL of the battery (3), the pin 6 of the control chip U1 is electrically connected to the control signal input terminal VOT_SW of the power output circuit (4), the pin 7 of the control chip U1 is electrically connected to the key switch SW1 for manually controlling the power on and off operation, and the pin 8 of the control chip U1 is grounded; the voltage detection circuit (5) includes a sampling resistor R7 and a sampling resistor R9, one end of the sampling resistor R7 is electrically connected to the output terminal BAT+ of the battery (3), the other end of the sampling resistor R7 is connected in series with the sampling resistor R9 and then grounded, and the connection end of the sampling resistor R7 and the sampling resistor R9 is the output terminal AD_VOL of the voltage detection circuit (5) and is electrically connected to the power control management circuit (6);The vehicle power input circuit (1) mainly includes an interface J1 for connecting to the power connector of the cigarette lighter in the vehicle, a charging control chip U3 for stabilizing the current output, a rectifier chip U6 for preliminary rectification and filtering, a rectifier chip U4 for adjusting the current size, and a rectifier chip U5 for preventing the battery (3) from back-flowing from the charging control chip U3. Pins 5, 6, 7, and 8 of the rectifier chip U5 are connected in series and electrically connected to the battery (3) as an output end.

2. The multifunctional vehicle driving recorder and monitoring system with multi-channel power supply according to claim 1 is characterized in that: The solar charging circuit (2) includes a solar charging panel, a connection port J1, a MOS tube Q1, and a transistor Q2. The connection port J1 is electrically connected to the solar charging panel. Pin 1 of the connection port J1 is grounded, and pin 2 is electrically connected to the positive electrode of the diode D1. The negative electrode of the diode D1 is connected in series with a capacitor C4 and then to ground. The negative electrode of the diode D1 is connected in series with a resistor R10 and then to the source S of the MOS tube Q1. The drain D of the MOS tube Q1 is electrically connected to the battery (3). A resistor R2 is connected in series between the gate G and the source S of the MOS tube Q1. The gate G of the MOS tube Q1 is connected in series with a resistor R3 and then to the collector of the transistor Q2. The emitter of the transistor Q2 is grounded. The base of the transistor Q2 is connected in series with a resistor R8 and then serves as a control signal input terminal SOLAR_SW of the solar charging circuit (2) and is electrically connected to the power control management circuit (6).

3. The multifunctional vehicle driving recorder and monitoring system with multi-channel power supply according to claim 1 is characterized in that: The power output circuit (4) includes a MOS tube Q3 and a transistor Q4. The source S of the MOS tube Q3 is electrically connected to the battery (3). The drain D of the MOS tube Q3 serves as the output terminal VOUT of the power output circuit (4) and is electrically connected to the input terminal DC+ of the step-down circuit (7). A resistor R5 is connected in series between the gate G and the source S of the MOS tube Q3. The gate G of the MOS tube Q3 is connected in series with the resistor R4 and then electrically connected to the collector of the transistor Q4. The emitter of the transistor Q4 is grounded. The base of the transistor Q4 is connected in series with the resistor R6 and then serves as the control signal input terminal VOT_SW of the power output circuit (4) and is electrically connected to the power control management circuit (6).

4. The multifunctional vehicle driving recorder and monitoring system with multi-channel power supply according to claim 1 is characterized in that: The camera connection circuit (8) includes a front recording camera connection circuit (9) for connecting to a front camera, an internal recording camera connection circuit (10) and a rear recording camera connection circuit (11); the image processing circuit (12) includes a front recording processing circuit (13), an internal recording and rear recording processing circuit (14); and the monitoring information storage circuit (15) includes an organic internal flash memory circuit (16) and an SD card storage circuit (17).

5. The multifunctional vehicle driving recorder and monitoring system with multi-channel power supply according to claim 1 is characterized in that: The main control circuit (18) includes a main control IC, and the voltage conversion circuit (19), the main frequency crystal oscillator circuit (20), the clock crystal oscillator circuit (21), the monitoring system and the functional system are all electrically connected to the main control circuit (18).

6. The multifunctional vehicle driving recorder and monitoring system with multi-channel power supply according to claim 1 is characterized in that: The wireless communication module (24) includes a network connection circuit (25) and a SIM card communication circuit (26), and the display screen module (27) includes a display screen control circuit (28) and a touch screen control circuit (29).

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