CN211236980U

CN211236980U - Real-time all-round safety monitoring equipment of operation vehicle multichannel camera

Info

Publication number: CN211236980U
Application number: CN201922090809.9U
Authority: CN
Inventors: 陈燕青; 龚星; 宋海彬
Original assignee: Shanghai Reacheng Communication Technology Co ltd
Current assignee: Shanghai Reacheng Communication Technology Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-11
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a real-time all-round safety monitoring equipment of operation vehicle multichannel camera gets the electricity from the car power, and the ACC start of igniting can realize the plantago control of car and ADAS function, in-car monitoring function, driver state monitoring function (DSM), car back monitoring function to record in real time and save, and can realize 4G video picture transmission. The scheme collects, records and stores the running time and speed of the vehicle and the running state information of the vehicle. The vehicle can play a role in restraining bad driving habits of drivers such as fatigue driving and the like, and can keep a lane for driving.

Description

Real-time all-round safety monitoring equipment of operation vehicle multichannel camera

Technical Field

The utility model relates to a real-time all-round safety monitoring equipment of operation vehicle multichannel camera specifically is a vehicle monitoring equipment who supports 4 way cameras at most.

Background

At present, the network car reservation market is rising, and the service quality and the driving safety become core competitiveness. The safety problem is always the most concerned problem of the network car reservation, in order to ensure the safety of passengers, a vehicle satellite positioning device and an emergency alarm device with a driving recording function are installed on the network car reservation, and the technical performance of the vehicle meets the relevant standard requirements of operation safety. Meanwhile, a plurality of provisions are also put forward on the information security protection.

And a vehicle satellite positioning device and an emergency alarm device with a driving recording function are definitely required to be installed according to vehicle access information. The automobile data recorder can record the conditions inside and outside the automobile during driving, and can protect the automobile owner or passengers in the automobile while recording road conditions. Especially, when the vehicle runs in an emergency, the recorder can restore the whole process of the accident for the party at the first time.

Based on this background, compared with the conventional single-camera or double-camera vehicle recorder on the market, a vehicle-mounted monitoring device which supports more cameras and can analyze the behavior of the driver becomes a trend.

The traditional driving monitoring equipment is only used for simple monitoring in front of or in the vehicle. And the driver can close eyes and make a breath because of fatigue in the actual driving process, and the driver can worry about right-hand-looking and head-lowering actions in case of distraction, and the driver can illegally operate to answer calls at the same time, so that the traditional driving monitoring equipment for illegal operations cannot provide an early warning function. The scheme can effectively identify the bad behaviors of the driver and give an alarm. This scheme can be implemented the control to car trunk simultaneously, prevents that trunk article are stolen. The scheme upgrades the traditional driving monitoring double-shooting mode to 4 shooting modes, and driving safety is effectively guaranteed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a real-time all-round safety monitoring equipment of operation vehicle multichannel camera to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the scheme is designed into a vehicle front MIPI CAM720P, a vehicle interior USB CAM720P, an AHD CAM720P (DSM) and a pull-back CVBS 480P based on MTK 8665.

Introduction of platform chip MTK 8665: quad-core

1.5Ghz Cortex-a53, highest support 3GB640MHZ LPDDR3, LTE Cat4(150mbps), Full HD (1920 × 1080) LCM shows h.2641080p +480P @30fps dual encoder.

Planta MIPI CAM: sensor OV2718, through MIPI transmission data to MTK8665 effective monitoring car plantago situation, also can do ADAS (driving assistance) camera simultaneously.

USB CAM in the vehicle: the wide-angle lens has a night vision function, transmits data to the MT8665 through the USB and effectively monitors the conditions of the front row and the rear row in the automobile.

The AHD CAM (DSM) in the vehicle has a night vision function and AHD signal output, effectively monitors the driving condition of a driver and gives an early warning to fatigue driving or other illegal operations of the driver.

Pull-back CAM: the CVBS signal is converted into a digital signal through a video decoding IC and transmitted to the MTK8665, so that the condition of the automobile trunk is effectively monitored, and the phenomena that the trunk goods are stolen and the passenger goods are missed and lost are prevented.

The camera video information can be stored in the SD card in segments.

LCM shows that: 4 cun screen display, MTK8665 directly shows through MIPI drive, but the preview camera information in real time.

One-key alarm: when the driver encounters an abnormal condition, the alarm button can be pressed to carry out alarm processing.

RF 4G signal transmission: the image information may be transmitted via RF 4G signaling, interacting with the background hold message. Therefore, the timely and effective platform safety supervision is achieved.

The traditional vehicle-mounted monitoring equipment with the functions does not have or cannot completely cover the vehicle-mounted monitoring equipment, in addition, the traditional driving monitoring equipment only has a video recording function, and the chip does not have enough calculation power to realize the functions of ADAS or DSM and the like

Based on the video coding capability of the MTK8665, if the 4-path camera is started at the same time, the memory load of an MTK system is increased, and the system is blocked, so that the scheme also has a relatively perfect solution.

Compared with the prior art, the beneficial effects of the utility model are that: the scheme has 4 paths of CAMs, and the video coding causes the system load to be too high and the system to be blocked. In order to avoid the problem, frame loss processing is adopted for partial video storage. For some CAM data information, the system adopts frame loss recording process. The front MIPI keeps 25fps, DSM AHD CAM frames are lost to 17fps, and the rear CAM frames are lost to 5fps, so that the smoothness of stored video is well kept while the system load rate is not too high. In addition, the back pull and the in-vehicle monitoring CAM adopt a 30-second alternative automatic recording switching mode for recording, so that the load of the system is effectively reduced.

Drawings

Fig. 1 is a schematic structural diagram of a multi-path camera real-time omni-directional monitoring device for an operating vehicle.

Fig. 2 is a circuit block diagram of a multi-camera real-time omni-directional monitoring device for an operating vehicle.

FIG. 3 is a diagram of a BMW line interface definition.

Fig. 4 is a drawing of the pull-back interface definition.

Fig. 5 is a DC/DC circuit diagram.

FIG. 6 is a SIM/T card circuit diagram.

FIG. 7 is a USB switching circuit diagram.

Fig. 8 is a proactive interface definition diagram.

Fig. 9 is a diagram of LCD interface definition.

FIG. 10 is an AHD encoding IC circuit diagram.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The USB switching principle is as follows:

1. downloading the firmware: when a computer USB is inserted, the SWITCH _ ID is high level, the MTK8665 works in a debugging mode, the analog SWITCH is switched to the channel 1, namely a MICROUSB interface, and is connected to the computer USB, and a tool flash _ tool corresponding to the MTK is turned on to be electrified and automatically downloaded. D906 is a reverse flow prevention diode, and the influence of reverse flow current on the system stability when a computer USB test is connected is effectively avoided.

2. When the goods are normally delivered, the SWITCH _ ID is low level, the MTK8665 works in the OTG mode, the analog SWITCH is switched to the channel 2, and the OTG USB CAM works.

The working principle of the equipment is as follows:

the +12V of the device is connected with the normal-electricity end of the automobile fuse box, the ACC line of the device is connected with the ACC interface corresponding to the fuse box, the DC/DCU900 directly outputs 5V after electrification, and the system detects that the 5V is automatically started. When the ACC is powered off after the automobile is flamed out, the equipment enters dormancy.

The front CAM module is connected with the host end through an FPC, and the module end mainly comprises a lens and a Sensor OV 2718. After the equipment is powered on, the MTK8655 controls the corresponding LDO and the network to power on the front CAM according to the specified time sequence, and the front CAM module outputs the RAW DATA image information through the MIPI. The USB CAM in the vehicle is connected with the host end through a special shielding cable, the power supply of the USB CAM can be enabled after the equipment is powered on, the USB CAM module is used for performing information handshake, and the USB transmits MJPEG 15fps video information to the system. The DMS (AHD) CAM and the pull-back CAM in the vehicle are connected with the host end through a shielding wire, the module directly outputs AHD and CVBS signals to a decoding IC RN6750 at the host end after power-on, the RN6750 converts analog video information into YCbCr4:2:2 format, and the analog video information is transmitted to the MTK8665 through a standard BT656 parallel hardware interface.

The recorded video information is stored in the SD card, the equipment is registered in the 4G network through the SIM card, and the video information can be transmitted to the background in real time through the radio frequency 4G network. Can preview camera information in real time through 4 cun MIPI screens. When meeting special conditions, a driver can press a one-key alarm button and transmit the alarm button to the Internet taxi appointment background through the 4G network to seek help. And the background can call video information in real time to ensure the driving safety of the automobile.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a real-time all-round safety monitoring equipment of operation vehicle multichannel camera which characterized in that: the intelligent vehicle-mounted intelligent monitoring system comprises an MT8665 central processing unit circuit, a vehicle front MIPI camera module, a vehicle interior USB camera module, a vehicle interior AHD camera module, a rear pull camera module, a power supply circuit, an internal storage circuit, an SIM/T card circuit, a sensor circuit, a radio frequency communication circuit and a one-key alarm module; the module or the circuit is connected with the central processing unit, and the power supply module provides voltage required by the work for the whole system; the central processing unit receives image information of the front MIPI camera module through the MIPI signal; USB camera module image information in the receiving car through the USB signal, AHD camera module, back pull camera module image information in the receiving car through simulation AHD, the last image information of receiving can pass through radio frequency communication circuit and upload the platform end and handle, and central processing unit handles the signal of each part received simultaneously and sends control signal to each part.

2. The real-time all-round safety monitoring equipment of operation vehicle multichannel camera of claim 1 characterized in that: the car front MIPI camera module is connected with the central processing unit through the FPC, and the car front video information can be stored in real time through internal coding.

3. The real-time all-round safety monitoring equipment of operation vehicle multichannel camera according to claim 2 characterized in that: the USB camera module in the vehicle is connected with the central processing unit through the shielding wire rod, and can store video information recorded in the vehicle in real time.

4. The real-time all-round safety monitoring equipment of operation vehicle multichannel camera according to claim 3 characterized in that: the AHD camera module in the automobile is connected with the central processing unit through a wire rod, so that fatigue driving monitoring can be carried out on a driver, and video information of the driver can be stored in real time.

5. The real-time all-round safety monitoring equipment of operation vehicle multichannel camera according to claim 4 characterized in that: the rear-pull camera module is connected with the central processing unit through a wire rod, so that the condition of the trunk of the vehicle can be monitored, and valuable articles in the trunk are prevented from being stolen.

6. The real-time all-round safety monitoring equipment of operation vehicle multichannel camera according to claim 5 characterized in that: the power supply circuit consists of a vehicle-mounted power supply, a vehicle-mounted power supply wire and a DC/DC circuit, and the power supply is converted to the MT8665 central processing unit circuit and other modules.