CN212061265U

CN212061265U - Vehicle-mounted multifunctional intelligent automobile data recorder

Info

Publication number: CN212061265U
Application number: CN202021010914.3U
Authority: CN
Inventors: 兰华平; 罗澧波; 黄志君; 邱清勇
Original assignee: Chengdu Luxingtong Information Technology Co ltd
Current assignee: Chengdu Luxingtong Information Technology Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-12-01
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses a vehicle-mounted multifunctional intelligent automobile data recorder, which comprises a power management chip, a MCU, an acceleration sensor and a controlled circuit; the MCU is subjected to voltage reduction by an external power supply and then is supplied with power for a long time; the acceleration sensor is connected with the awakening port of the MCU; the power management chip is connected with the controlled circuit and supplies power to the controlled circuit; the controlled circuit at least comprises a CPU, a camera, a storage module and a communication circuit, and the acceleration sensor, the camera, the storage module and the communication circuit are respectively connected to the CPU; and the MCU is respectively connected with the CPU and the power management chip. The vehicle recording device is awakened only when the vehicle is in abnormal motion when the vehicle is static, timeliness is high, power consumption is low, and storage space can be effectively saved.

Description

Vehicle-mounted multifunctional intelligent automobile data recorder

Technical Field

The utility model relates to an image acquisition equipment, especially an on-vehicle multi-functional intelligent driving record appearance.

Background

Most of the existing automobile data recorders can work after a vehicle is started, and the vehicle state in a parking state cannot be monitored. Some vehicle event data recorder have been equipped with stand-by power supply to after the vehicle flame-out, continue to maintain vehicle event data recorder's normal work, but under this mode, vehicle event data recorder normal work, power consumptive fast, also can normally consume storage space.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: to the problem that above-mentioned exists, provide a vehicle-mounted multi-functional intelligent vehicle event data recorder to when the vehicle is in quiescent condition, and when the vehicle takes place the abnormal motion, in time take notes the surrounding environment, effectively reduce the consumption of consumption and to storage space.

The utility model adopts the technical scheme as follows:

a vehicle-mounted multifunctional intelligent driving recorder comprises a power management chip, an MCU, an acceleration sensor and a controlled circuit; the MCU is subjected to voltage reduction by an external power supply and then is supplied with power for a long time; the acceleration sensor is connected with the awakening port of the MCU; the power management chip is connected with the controlled circuit and supplies power to the controlled circuit; the controlled circuit at least comprises a CPU, a camera, a storage module and a communication circuit, and the acceleration sensor, the camera, the storage module and the communication circuit are respectively connected to the CPU; and the MCU is respectively connected with the CPU and the power management chip. The power management chip comprises a power switch circuit, a voltage reduction circuit and a battery management chip. The MCU is connected with the long power supply, when the vehicle is static, the whole device is in a dormant state, when the acceleration sensor detects abnormal motion, the MCU is awakened, and then the MCU controls the power management chip to electrify devices (controlled circuits) such as the CPU and the like, so that the whole device is awakened to record the field environment. When the device is in a dormant state, the working current is small, the electric energy and the storage space can be effectively saved, and when the vehicle has abnormal motion, the recording device is immediately waken to record the surrounding conditions, so that the timely parking record is realized.

Furthermore, on-vehicle multi-functional intelligent driving record appearance still includes power source, and MCU and power management chip are connected respectively to this power source, between power source and MCU, are connected with first step-down chip. The device is integrally connected to an external power supply through a power supply interface, so that the circuit structure is simplified, and the assembly and installation difficulty is reduced.

Furthermore, the vehicle-mounted multifunctional intelligent driving recorder further comprises a GPS module, the GPS module is connected to the first voltage reduction chip, the MCU is connected with the GPS module, and the GPS module is connected to the CPU. The GPS module is formed by connecting a switch circuit and a GPS chip, and the switch circuit is connected with the MCU to be controlled. When MCU was awaken up, because GPS is supplied power by first step-down chip (power management chip dormancy this moment), MCU can awaken up GPS module fast in order to fix a position, and the promptness is high.

Further, controlled circuit still includes power amplifier circuit and pickup circuit, power amplifier circuit and pickup circuit connect respectively in on the CPU, the power discharge route the power management chip power supply, pickup circuit is by the CPU power supply. The device has the remote communication function, the voice pickup circuit receives the voice of a user, transmits the voice to the CPU for processing, and then transmits the voice to the CPU through the communication circuit, so that the voice is transmitted, and the voice data packet transmitted from the far end is received by the communication circuit, transmitted to the CPU for processing, and then transmitted to the power amplifier circuit for playing. The circuit can be used for contacting with a remote end when a user is inconvenient to use the mobile phone.

Furthermore, a charging management chip is connected between the power management chip and the controlled circuit, and the charging management chip is connected with a standby battery; the charging management chip is also connected with the MCU through a second voltage reduction chip; the CPU is connected with the charging management chip. The external power supply can be interrupted suddenly, and the backup battery is arranged to maintain the device to work continuously for a period of time when the external power supply is powered off, so that necessary work (such as data storage and normal shutdown) is completed, and the device is prevented from being damaged due to sudden power failure.

Further, the communication circuit comprises an LTE sub-module circuit and a WLAN sub-module circuit. The LTE sub-module circuit can complete the receiving and sending of emergency data packets, instructions, voice data packets and the like, and the WLAN sub-module circuit can complete the direct export (without passing through a card reader) of records in a local area network environment.

Furthermore, the LTE sub-module circuit is directly powered by the power management chip, and the WLAN sub-module circuit is powered by the charging management chip, so that components and parts can be efficiently utilized, and the circuit structure is simpler.

Further, the LTE sub-module is connected to the CPU through a USB-HUB. This eliminates the need for retrofitting the CPU.

Further, the controlled circuit further comprises a display, and the display is connected to the CPU.

Further, the display comprises a display screen and a screen backlight lamp, and the display screen and the screen backlight lamp are respectively connected to the CPU.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the vehicle recording device of the design can record the surrounding environment in time when the vehicle is in abnormal motion in a static state. Under normal conditions, the storage device is in a dormant state, has the characteristic of low power consumption, and can save storage space under normal conditions.

Drawings

Fig. 1 is a structural diagram of an on-vehicle multifunctional intelligent driving recorder.

Fig. 2 is a circuit structure diagram of the vehicle-mounted multifunctional intelligent automobile data recorder.

FIG. 3 is a diagram of a first buck chip and peripheral circuitry.

FIG. 4 is a diagram of a power management chip and peripheral circuitry.

FIG. 5 is a six-axis sensor and peripheral circuit diagram.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

The embodiment discloses a vehicle-mounted multifunctional intelligent automobile data recorder which comprises a power management chip, an MCU (microprogrammed control unit), an acceleration sensor and a controlled circuit; the MCU is powered by the external power supply after being reduced in voltage. The acceleration sensor is connected with a wakeup port of the MCU, and the MCU is waken up when abnormal motion is detected. The power management chip is connected with the controlled circuit and supplies power to the controlled circuit. The controlled circuit at least comprises a CPU, a camera, a storage module and a communication circuit, wherein the acceleration sensor, the camera, the storage module and the communication circuit are respectively connected to the CPU, and the CPU completes corresponding logic control. The MCU is respectively connected with the CPU and the power management chip to complete data interaction with the CPU and realize control over the power management chip, specifically, in a dormant state, when the MCU is awakened, the power management chip is controlled to supply power to a controlled circuit and return to normal work, a camera records a field video/image and stores the field video/image into the storage module through the CPU, and the CPU can send or export the record in the storage module from the communication circuit in the subsequent process. In this regard, the communication circuit may be a data interface, or may be a communication circuit module formed by a communication chip circuit (such as a cellular mobile communication chip or a local area network communication chip).

In one embodiment, as shown in fig. 1, the vehicle-mounted multifunctional intelligent driving recorder comprises a power management chip, an MCU, a CPU, a GPS module, a communication circuit, a camera, a storage module and an acceleration sensor. The MCU is powered by an external power supply after being subjected to voltage reduction by the first voltage reduction chip. The GPS module is connected to the first voltage reduction chip to obtain power supply. The power management chip respectively supplies power to the CPU, the communication circuit, the camera and the storage module. The acceleration sensor is connected with the awakening port of the MCU. The GPS module, the communication circuit, the camera and the storage module are respectively connected to the CPU. The MCU is respectively in signal connection with the GPS module, the CPU and the power management chip. The MCU transmits control signals to the GPS module, the CPU and the power management chip, and the CPU transmits corresponding data signals and/or control signals to the GPS module, the communication circuit, the camera and the storage module so as to control the specific work of the GPS module, the CPU and the storage module.

Specifically, as shown in fig. 1, the vehicle-mounted multifunctional intelligent driving recorder comprises a power interface, a power management chip, an MCU, a CPU, a GPS module, a communication circuit, a camera, a storage module and an acceleration sensor; the power interface is respectively connected with the MCU and the power management chip, and a first voltage reduction chip is connected between the power interface and the MCU. The MCU is powered by an external power supply after being subjected to voltage reduction by the first voltage reduction chip. The GPS module is connected to the first voltage reduction chip to obtain power supply. The power management chip respectively supplies power to the CPU, the communication circuit, the camera and the storage module. The acceleration sensor is connected with the awakening port of the MCU. The GPS module, the communication circuit, the camera and the storage module are respectively connected to the CPU. The MCU is respectively in signal connection with the GPS module, the CPU and the power management chip. A charging management chip is connected between the power management chip and the controlled circuit, and the charging management chip is connected with a standby battery; the charging management chip is also connected with the MCU through a second voltage reduction chip so as to supply power to the MCU and the controlled circuit after the external power supply is powered off and maintain the power consumption of normal work such as shutdown. And the CPU is connected with the charging management chip to control the charging management chip to charge the standby battery.

It should be noted that the circuit module is generally composed of corresponding chips and components, which is common knowledge in the art, and the specific circuit is determined by the type selection, which is not described herein too much.

When the vehicle is abnormally moved under the static condition, the collected records (such as 20s) can be arranged into data packets to be sent to a remote platform for analysis, and for this purpose, the communication circuit comprises an LTE sub-module circuit. Further, in a local area network environment, for convenience of operation, the communication circuit may further include a WLAN sub-module circuit to rapidly export records through the local area network.

The working principle of the vehicle-mounted multifunctional intelligent driving recorder is as follows: when the vehicle is in a static state, the device is in a dormant state, and a CPU, a camera, a GPS module and the like with high power consumption are in a work suspension state. External power supply (5V) step-down is 3.3V, supplies power for GPS module and MCU, in order to realize MCU awakens up, in this design, MCU is long power supply after the step-down by external power supply. And an INT (INT) pin of the acceleration sensor is connected with a WKUP pin of the MCU, and the MCU is awakened when the abnormal motion of the vehicle is sensed. The MCU is respectively connected with the GPS module, the CPU and the power management chip to control the working state of the GPS module, interact data with the CPU and control the power supply (namely control of the working state) of the power management chip to the CPU, the communication circuit, the camera, the storage module and the like. After the program is configured, the MCU rapidly wakes up the GPS module to realize positioning after being awakened, the power supply management chip is switched on to supply power to the CPU, the camera, the storage module, the communication circuit and the like to realize static awakening, and the CPU is particularly responsible for normal work of each module. And further, after the vehicle-mounted multifunctional intelligent driving recorder works normally, the data collected by the camera is recorded in the storage module. The storage module usually adopts a TF card as a storage medium, and the CPU is configured with FLASH.

The communication circuit completes the report of the data packet in emergency and the remote command receiving and sending, and the record data export and the data packet receiving and sending can be realized through the communication circuit. The communication circuit comprises two parts, wherein one part is an LTE sub-module circuit, and the other part is a WLAN sub-module circuit. The CPU is respectively connected with the LTE sub-module circuit and the WLAN sub-module circuit and is used for controlling the LTE sub-module and the WLAN sub-module to receive and transmit data.

The camera is responsible for collecting images during work.

The CPU processes signal transmission and reception and data operation of related elements.

Generally speaking, in order to facilitate users to watch records in time, the controlled circuit further comprises a display, the display is connected to the CPU, and the power management chip supplies power to the display. The display may play the record in the storage module under the trigger.

In order to ensure the working continuity and stability of the vehicle-mounted multifunctional intelligent driving recorder, a charging management chip is connected between the power management chip and the controlled circuit and is connected with a standby battery; the charging management chip is also connected with the MCU through a second voltage reduction chip; the CPU is connected with the charging management chip. Under the condition of switching on an external power supply, the CPU controls the charging management chip to charge the standby battery, after the external power supply is powered off, the standby battery discharges through the charging management chip, the standby battery supplies power to the MCU after being subjected to voltage reduction through the second voltage reduction chip, and the charging management chip supplies power to the controlled circuit so as to keep the vehicle-mounted multifunctional intelligent automobile data recorder capable of continuously and normally working (for example, shutdown is performed after data are continuously recorded).

In consideration of the fact that a driver is inconvenient to use the mobile phone for asking for help in a special situation such as a severe collision of a vehicle, the controlled circuit further comprises a power amplifier circuit and a pickup circuit, the power amplifier circuit and the pickup circuit are respectively connected to the CPU, the power amplifier circuit is powered by the power management chip, and the pickup circuit is powered by the CPU. Therefore, the device has the remote communication function, the sound pickup circuit receives the voice of a user, transmits the voice to the CPU for processing, and then transmits the voice to the CPU through the communication circuit, so that the voice is transmitted, and the voice data packet transmitted from the far end is received by the communication circuit, transmitted to the CPU for processing, and then transmitted to the power amplifier circuit for playing. The circuit can be used for contacting with a remote end when a user is inconvenient to use the mobile phone. The CPU can also be connected with a keyboard, a user triggers the keyboard to realize calling to a far end, for example, a called number is preset, and after the user triggers a corresponding key, the CPU controls the communication circuit to complete the calling. Of course, it can also be more intelligent, i.e. controlled by voice: the pickup circuit collects the voice command of the user, and after the CPU judges and analyzes the voice command, the pickup circuit triggers the communication circuit to complete the corresponding call.

Example two

The embodiment discloses on-vehicle multi-functional intelligent driving record appearance, as shown in fig. 1, including power source interface, first step-down chip, second step-down chip, power management chip, the management chip that charges, MCU, CPU, GPS module, communication circuit, camera, display, storage module, FLASH, pickup circuit and power amplifier circuit.

The power interface is respectively connected with a first voltage reduction chip and a power management chip, the first voltage reduction chip is respectively connected with the MCU and the GPS module, the power management chip is connected with a charging management chip, the charging management chip is respectively connected with the MCU, the CPU, the communication circuit, the camera, the display, the storage module, the FLASH, the display, the pickup circuit and the power amplifier circuit, and the second voltage reduction chip is connected between the charging management chip and the MCU; the MCU is respectively connected with the GPS module, the CPU and the power management chip; the GPS module, the communication circuit, the camera, the display, the storage module, the FLASH, the display, the pickup circuit and the power amplifier circuit are respectively connected to the CPU. The communication circuit comprises an LTE sub-module circuit and a WLAN sub-module circuit, the LTE sub-module circuit is directly powered by the power management chip, and the WLAN sub-module circuit is powered by the charging management chip. The LTE sub-module circuit and the WLAN sub-module circuit are both composed of corresponding communication chips and antennas. The LTE submodule is connected to the CPU through the USB-HUB. The display consists of a display screen and a screen backlight lamp, and the display screen and the screen backlight lamp are respectively connected with the CPU.

Fig. 2 is a structural diagram of the vehicle-mounted multifunctional intelligent driving recorder of the embodiment. MCU chooses for use STM32G0 chip, and CPU chooses for use HI3559V200 chip, and CPU configuration memory H5TQ4G63EFR chip. The acceleration sensor employs a six-axis sensor BIM160, which is connected to the WKUP pin of the STM32G0 chip. Fig. 5 shows a circuit diagram of a six-axis sensor G-sensor, which is composed of a chip BIM160 and peripheral circuits. As shown in fig. 3, the first voltage reduction chip adopts an MPQ2013 chip to reduce the voltage of a power supply (i.e., an external power supply) introduced by the 5V power supply structure, and outputs 3.3V voltage, which is respectively connected to a switch MOS2305, an AT6558RGPS chip, and an MCU, the MCU is in signal connection with the MOS2305 (a switch circuit of a GPS chip), the MOS2305 is connected to the AT6558R, and the AT6558RGPS can be turned on or off under the control of the MCU. As shown in fig. 4, the POWER management chip adopts an EAT7014 chip, the MCU is connected to an enable pin (EN) of the EAT7014 chip, POWER _ CTL in the figure is a signal provided by the MCU, the EAT7014 is respectively connected to a 4G communication chip (EC20), an EAT3446 chip and the CPU, the EAT3446 chip steps down a voltage of 5V (3.8V) and supplies POWER to the 4G communication chip, and the EAT3446 chip is connected to and controlled by the CPU through a signal. The EAT7014 chip is connected with the USB _ VBUS. The EAT7014 chip is connected to the EAT6003 chip (i.e., a charging management chip), the EAT6003 chip is connected to a backup battery, and the EAT6003 chip is connected to and controlled by the CPU. The EAT6003 chip is respectively connected with the MCU, the CPU, the WLAN sub-module, the alarm, the H5TQ4G63EFR chip, the display and the storage module, wherein the voltage output by the EAT6003 chip is reduced by the CJ6211 voltage reduction chip (namely, the second voltage reduction chip) and then is connected with the MCU, and further, the clock is connected with the CPU to supply power for the clock or the clock power supply, namely, the button cell is charged and supplies power for the Haisi chip standby module, and the button cell supplies power for the Haisi chip standby module. The voltage output by the EAT6003 chip is respectively reduced by the Haisi power management chip, and then is respectively connected with the H5TQ4G63EFR chip, the display, the camera and the storage module, and the Haisi power management chip is controlled by the Haisi chip standby module (there is line connection). The WLAN submodule circuit adopts a WiFi chip (and an antenna) of WF _ R23D. The display comprises an IPS display screen and an STI9287 screen backlight lamp, both of which are connected to corresponding signal ports of the CPU. The camera is composed of a CMOS image sensor IMX415 and a lens. The storage module is configured with a FLASH chip W25Q256, and is matched with a TF card to realize data reading and writing. The power amplifier circuit comprises power amplifier TPA2035 and loudspeaker, and microphone MIC is selected for the pickup circuit. The power amplifier TPA2035, the MIC, the WIFI chip WF _ R23D, the GPS chip AT6558R, the 4G chip EC20, the IPS display screen, the screen backlight STI9287, the image sensing chip IMX415 and the FLASH chip W25Q256 are respectively connected with corresponding ports on the CPU. The CPU is also configured with necessary peripheral circuits such as a clock circuit, an interface circuit, and the like.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A vehicle-mounted multifunctional intelligent driving recorder is characterized by comprising a power management chip, an MCU, an acceleration sensor and a controlled circuit; the MCU is subjected to voltage reduction by an external power supply and then is supplied with power for a long time; the acceleration sensor is connected with the awakening port of the MCU; the power management chip is connected with the controlled circuit and supplies power to the controlled circuit; the controlled circuit at least comprises a CPU, a camera, a storage module and a communication circuit, and the acceleration sensor, the camera, the storage module and the communication circuit are respectively connected to the CPU; and the MCU is respectively connected with the CPU and the power management chip.

2. The vehicle-mounted multifunctional intelligent driving recorder according to claim 1, further comprising a power interface, wherein the power interface is respectively connected with the MCU and the power management chip, and a first voltage reduction chip is connected between the power interface and the MCU.

3. The vehicle-mounted multifunctional intelligent driving recorder of claim 2, further comprising a GPS module, wherein the GPS module is connected to the first buck chip, the MCU is connected to the GPS module, and the GPS module is connected to the CPU.

4. The vehicle-mounted multifunctional intelligent driving recorder according to claim 1, wherein the controlled circuit further comprises a power amplifier circuit and a sound pickup circuit, the power amplifier circuit and the sound pickup circuit are respectively connected to the CPU, the power amplifier circuit is powered by the power management chip, and the sound pickup circuit is powered by the CPU.

5. The vehicle-mounted multifunctional intelligent driving recorder as claimed in claim 1, wherein a charging management chip is connected between the power management chip and the controlled circuit, and the charging management chip is connected with a standby battery; the charging management chip is also connected with the MCU through a second voltage reduction chip; the CPU is connected with the charging management chip.

6. The vehicle mounted multi-function intelligent tachograph of claim 5, wherein the communication circuit comprises an LTE sub-module circuit and a WLAN sub-module circuit.

7. The vehicle-mounted multifunctional intelligent tachograph of claim 6, wherein the LTE sub-module circuit is directly powered by the power management chip and the WLAN sub-module circuit is powered by the charging management chip.

8. The vehicle-mounted multifunctional intelligent tachograph of claim 6 or 7, wherein the LTE sub-module is connected to the CPU through a USB-HUB.

9. The vehicle-mounted multifunctional intelligent driving recorder of claim 1, wherein the controlled circuit further comprises a display, and the display is connected to the CPU.

10. The vehicle-mounted multifunctional intelligent driving recorder of claim 9, wherein the display comprises a display screen and a backlight screen, and the display screen and the backlight screen are respectively connected to the CPU.