CN2781677Y

CN2781677Y - Vehicle monitoring device

Info

Publication number: CN2781677Y
Application number: CN 200520040098
Authority: CN
Inventors: 应李勇; 陈小刚; 田广; 莫怀东; 菅志军
Original assignee: ANCHEN VIDEO EQUIPMENT (SHANGHAI) Co Ltd
Current assignee: BOCOM SMART NETWORK TECHNOLOGIES Inc
Priority date: 2005-03-11
Filing date: 2005-03-11
Publication date: 2006-05-17
Anticipated expiration: 2015-03-11

Abstract

The utility model relates to a vehicle monitoring device which comprises an audio input module 1, a video input module 2, a video output module 3, a picture separator 4, an encoder 5, a power module 10 and a main control CPU 6, wherein the main control CPU 6 receives code streams which are encoded by the encoder 5 and stores data in a memory module 7; the main control CPU 6 is also connected with an audio/video alarming module 8 and a control panel 11; the main control CPU 6 can also be connected with a wireless network access module 9. The utility model has the advantages that the utility model well solves the problems of vehicle data storage and stable work in vehicle environment, and adopts video coding standard with a higher compression ratio; the utility model is provided with wireless data transmission channels, can rapidly transmit images and other information to remote control centers, and enhance the reaction capacity of a system.

Description

Automobile-used supervising device

Technical field

The utility model relates to a kind of automobile-used supervising device, relate in particular to a kind of can be with the automobile-used supervising device of Voice ﹠ Video real time record and wireless transmission.

Background technology

Along with high development of social economy, traffic transport industry is become increasingly prosperous, and the guard monitor problem of various vehicles is also more and more paid attention to, and almost be in space state at the vehicle-mounted Voice Surveillance series products of looking in the market.Though some special car has been installed DVR onboard for the demand of safety, but the self shortcoming of hard disk video tape recorder makes it can't extensive use, its major defect has: the storage medium anti-shake performance is relatively poor, can not be under vehicle-mounted vibration environment long-time reliable and stable work; Adopt the higher method for video coding of compression ratio; Do not have wireless data transmission channel, can not arrive far-end control centre to image and other quick transfers of information, reduced system response sensitivity.

Summary of the invention

The utility model technical issues that need to address have provided a kind of automobile-used supervising device, are intended to solve above-mentioned defective.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: an audio frequency input module, a video input module, a video output module, an image splitter, an encoder; Encoder receives the signal of the audio frequency input module that has converted digital audio and video signals to, the digital video signal that image splitter transmits video input module, the one tunnel outputs to the video output module, and another road outputs to encoder, a power module is used and power supply is provided; Also comprise a master cpu; Described master cpu receives the code stream of encoded device coding, and with storage in memory module; Described master cpu also is connected with the alarm module and the control panel of sound, video; Described master cpu can also be connected with the wireless network access module, is used for passing to far-end control centre with being stored in the memory module data.

Compared with prior art, the beneficial effects of the utility model are: owing to adopted novel storage medium, anti-shake performance is good, can be good at solving the vehicle-mounted problem that goes up storage, for a long time steady operation under vehicle environment; Adopt the higher video encoding standard of compression ratio, the data volume after the same video content encoding compression can be littler, and the storage medium that capacity is identical can be stored more video content; Have wireless data transmission channel, images and other information improve the respond of system to far-end control centre rapidly.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model;

Fig. 2 is the circuit block diagram of wireless network access module 9 in the utility model;

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

By Fig. 1, Fig. 2 as seen: the utility model comprises: 4, one encoders 5 of 3, one image splitters of 2, one video output modules of 1, one video input module of an audio frequency input module; Encoder 5 receives the signal of the audio frequency input module 1 that has converted digital audio and video signals to, the digital video signal that image splitter 4 transmits video input module 2, and one the tunnel outputs to video output module 3, and another road outputs to encoder 5; A power module 10 is used and power supply is provided; Also comprise a master cpu 6; Described master cpu 6 receives the code stream of encoded device 5 codings, and with storage in memory module 7; Described master cpu 6 also is connected with the alarm module 8 and the control panel 11 of sound, video; Described master cpu 6 can also be connected with wireless network access module 9, is used for passing to far-end control centre with being stored in the memory module data;

Described encoder 5 is MPEG-4 encoders; Described image splitter 4 is No. four image splitters; Described memory module 7 is the Compact Flash cards that do not have mechanical structure; Described wireless network access module 9 is to transmit by the fifo module 91 that is connected with master cpu 6 and wireless network access module CPU92 and CDMA module 93;

Described master cpu 6 can also be connected with usb 12, is used for carrying out high-speed data communications with computer; Be connected with RS232 interface 13, CAN interface 14, black box module 15 and GPS module 16;

Video input module: four road analog video signals of external camera input are converted into digital video signal by A/D.

The video output module: the digital video signal of four image splitters output can output to and check video content on the external monitor by D/A conversion position analog video signal.

Audio frequency input module: the two-way microphone signal of outside input is exported simulated audio signal through amplifying circuit, and simulated audio signal is converted into digital audio and video signals by the A/D conversion.

Four image splitters: four way word vision signals to video input module output are handled, can four cut apart or full frame shows, and can finish osd function, have the output of two-way digital video, one the tunnel outputs to the video output module, and one the tunnel outputs to the MPEG-4 encoder.

The MPEG-4 encoder: the digital audio-frequency data of digital of digital video data that four image splitters are come and the output of audio frequency input module is done the MPEG-4 compressed encoding, and the code stream that the compression back is exported can be read by master cpu.

The master cpu module: this CPU is the processor of 32 risc architectures, and its kernel is ARM7-TDMI, and system clock frequency is up to 66MHz.The control of the Coordination Treatment between the control of whole system, each module, the storage of MPEG-4 code stream analysis and man-machine interface is all finished by this CPU.

Memory device: storage medium adopts Compact Flash card, and it does not have mechanical structure, and anti-shake performance is good, and volume is small and exquisite, is fit to very much work long hours on the vehicle environment again.

Front panel: by button and LED light, the user of service can check system mode by the button input control information with by LED light on the front panel, is the main man-machine interface of native system.

ZEM: report to the police by 5 tunnel altogether and import,, read, find to finish corresponding processing by warning message by master cpu for the switching value signal.

USB interface: this interface is operated by master cpu, is the USB1.1SLAVE interface, can be connected to computer, carries out high-speed data communications with computer.

The RS232 interface: this interface is a spare interface, can connect the equipment (as the The Cloud Terrace decoder of video camera etc.) of outside other RS232 interfaces when needed.

The CAN interface: this interface is a spare interface, can have the equipment of CAN interface by external vehicle-mounted last other.

The black box module: master cpu is finished collection to running car data (speed and other switching value signals) by this module, and storage in Compact Flash card.

The wireless network access module: master cpu sends to control centre to data by wireless mode by this module.The main interface of this module describes in detail below more again.

The GPS module: master cpu is finished collection to GPS information by controlling this module, and storage in Compact Flash card.

Power module: the vehicle power of outside input is converted to the needed power supply of each module of machine intimate.Its operating voltage range wide (10V～24V direct current supply) can be fit to various vehicle; It is adopted distinctive EMC Design, and anti-power pulse and ripple disturb, and each module of internal system can be worked normally.

Fifo module: this module connects master cpu and wireless network access module CPU, is the buffering area of transmission data between these two CPU.

CPU: this CPU is the processor of 32 risc architectures, and its kernel is ARM7-TDMI, and system clock frequency is up to 66MHz.This CPU finishes PPP dialing by the CDMA module, realizes that Internet inserts, and sets up TCP with control centre and be connected; The data that master cpu transmits by FIFO can be sent to far-end control centre.And function such as redial when finishing wireless connections and going offline automatically.

CDMA module and antenna: CPU sets up communication channel by CDMA module and antenna and carrier server.

Claims

1. an automobile-used supervising device comprises: an audio frequency input module (1), a video input module (2), a video output module (3), an image splitter (4), an encoder (5); Encoder (5) receives the signal of the audio frequency input module (1) that has converted digital audio and video signals to, the digital video signal that image splitter (4) transmits video input module (2), one the tunnel outputs to video output module (3), and another road outputs to encoder (5); A power module (10) is used and power supply is provided; It is characterized in that: also comprise a master cpu (6); Described master cpu (6) receives the code stream of encoded device (5) coding, and with storage in memory module (7); Described master cpu (6) also is connected with the alarm module (8) and the control panel (11) of sound, video; Described master cpu (6) can also be connected with wireless network access module (9), is used for passing to far-end control centre with being stored in the memory module data.

2. automobile-used supervising device according to claim 1 is characterized in that: described encoder (5) is the MPEG-4 encoder; Described image splitter (4) is No. four image splitters; Described memory module (7) is the Compact Flash card that does not have mechanical structure; Described wireless network access module (9) is to transmit by the fifo module (91) that is connected with master cpu (6) and wireless network access module CPU (92) and CDMA module (93).

3. automobile-used supervising device according to claim 1 and 2 is characterized in that: described master cpu (6) can also be connected with USB interface (12), is used for carrying out high-speed data communications with computer; Be connected with RS232 interface (13), CAN interface (14), black box module (15) and GPS module (16).