CN102981442A - Vehicle-mounted monitoring system with blind area replacement function - Google Patents

Vehicle-mounted monitoring system with blind area replacement function Download PDF

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CN102981442A
CN102981442A CN 201210459700 CN201210459700A CN102981442A CN 102981442 A CN102981442 A CN 102981442A CN 201210459700 CN201210459700 CN 201210459700 CN 201210459700 A CN201210459700 A CN 201210459700A CN 102981442 A CN102981442 A CN 102981442A
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communication
vehicle
microcontroller
module
monitoring system
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CN 201210459700
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牛宇
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牛宇
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Abstract

The invention discloses a vehicle-mounted monitoring system with a blind area replacement function. The vehicle-mounted monitoring system with the blind area replacement function comprises a microcontroller and a positioning module, wherein the positioning module, the communication module, the local storage medium and the sensor are connected with the microcontroller. The vehicle-mounted monitoring system with the blind area replacement function can effectively resolve the problem of communication interruption between monitoring equipment and a monitor server under the conditions of a network blind area or interrupt signal. When communication is restored, monitoring personnel can examine the running condition of a vehicle in the process of communication interruption in time.

Description

带盲区补发功能的车载监控系统 With blind replacement vehicle monitoring system functions

技术领域 FIELD

[0001] 本发明涉及一种车载监控系统,尤其是带盲区补发功能的车载监控系统。 [0001] The present invention relates to a vehicle monitoring system, in particular a blind with a replacement vehicle monitoring system functions.

背景技术 Background technique

[0002] 各种车载监控设备已经得到较为广泛的应用,特别是在物流、公务车、汽车租赁、出租车等行业有着巨大的市场需求。 [0002] a variety of on-board monitoring equipment has been more widely used, in particular, has a huge market demand in logistics, public service vehicles, car rental, taxi and other industries. 目前,常见的车载监控设备主要使用GPRS或CDMA制式的模块进行通信,利用各电信运营商的移动通信网络将信息传输到服务器。 At present, the common vehicle monitoring device use of GPRS or CDMA standard modules communicate using the telecom operator's mobile communication network to transmit information to the server. 虽然目前各电信运营商的网络覆盖情况已经较为完善,但仍存在一些网络不能覆盖的盲区,如偏远山区,或者信号中断的情况下。 Although the network coverage is currently the telecom operators have been better, but there are still some blind spots can not be covered by the network, as in the case in remote mountainous areas, or signal interruption. 监控设备与监控服务器的通信就会中断,在通信恢复后,监控人员无法核查车辆在通信中断过程中的运行情况。 Communication and surveillance equipment to monitor the server is interrupted, after the communication is restored, the monitoring personnel can not verify the operation of vehicles in communication interruption process. 采用卫星通信虽然可以有效的解决这一问题,但目前无论是卫星通信设备还是卫星通信服务费仍然高昂,不利于大规模的市场推广。 Although the use of satellite communications can effectively solve this problem, but whether it is or satellite communication equipment satellite communications service fee is still high, is not conducive to large-scale marketing.

发明内容 SUMMARY

[0003] 本发明针对现有技术的不足,提供一种带有盲区补发机制的车载监控系统,它可以有效解决在网络盲区、或者信号中断的情况下,监控设备与监控服务器的通信中断,在通信恢复后,监控人员能及时核查车辆在通信中断过程中的运行情况。 [0003] The present invention addresses deficiencies in the prior art, vehicle monitoring system provided with a blind replacement mechanism, which can effectively solve the blind spot in the network, or a signal interruption, the monitoring device and the monitoring server communication is interrupted, after communication is restored, the monitoring staff can verify the operation of vehicles in communication interruption process.

[0004] 本发明解决其技术问题所采用的技术方案是: [0004] aspect of the present invention to solve the technical problem are:

一种带盲区补发功能的车载监控系统,包括微控制器和与微控制器连接的定位模块、通信模块、本地存储介质和传感器。 A tape replacement vehicle blind spot monitoring system functions, and a positioning module including a microcontroller connected to the microcontroller, a communication module, the local storage media and a sensor.

[0005] 所述微控制器主要功能包括:(1)完成与定位模块,通信模块以及本地存储卡之间的通信。 [0005] The main function of the micro controller comprising: a communication between (1) complete with the positioning module, a communication module and a local memory card. 读取定位模块接收到的地理信息,并将信息打包成与服务器约定好的帧格式传输给通信模块或存储在本地存储卡;(2)解析服务器下行的各种指令,并控制系统完成相应的操作;(3)完成各种GIS算法的运算;(4)采集各种传感器的数据;(5)与外部I/O设备进行通信;(6)控制终端外接的继电器以控制汽车Acc电源的通断。 Geographic positioning module reads the information received, the server and the information is packaged into a good agreement with the format of the transmission frame to the communication module or stored in the local memory card; various instructions (2) downlink resolution server, and a control system to complete the corresponding operation; (3) perform various arithmetic algorithms GIS; (4) collect data from various sensors; (5) communication with external I / O devices; (6) an external relay control terminal to control the power of the car through Acc off.

[0006] 所述定位模块为GPS模块,或GLONASS、Galileo等其他的定位系统,用以接收卫星信号并通过通信接口将经纬度、海拔、时间、方向、速度等信息发送给微控制器; [0006] The GPS module is a positioning module, or GLONASS, Galileo positioning system and other for receiving the satellite signals via the communication interface and the latitude and longitude, altitude transmission information, time, direction, speed, etc. to the microcontroller;

所述通信模块为GPRS通信模块或CDMA模块,用以接收微控制器发出的各种指令,与远程服务器进行全双工的通信; The communication module is a GPRS communications module or CDMA module for receiving various instructions issued by the microcontroller performs full duplex communication with a remote server;

所述本地储存介质为通用的SD卡或TF卡,用以存储记录微控制器写入的各种数据并以规定好的文件格式保存; The local storage media or a general-purpose SD card TF card for storing various data and records the microcontroller writes the saved file with a predetermined format;

微控制器为工业级高性能微控制器。 Microcontroller for industrial high-performance microcontroller.

[0007] 本监控系统在移动网络信号覆盖良好的地区,系统按照正常的通信机制将车辆信息及地理信息通过通信模块上传到服务器,同时接受服务器下行的各种指令并做出处理;而在通信盲区或者通信中断的情况下,则先将车辆信息及地理信息保存到本地存储介质上,同时不断监测网络信号强度,在信号强度满足门限的情况下及时连接到服务器将存储在本地存储卡上的待补发数据快速补发到服务器上,确保监控人员能及时核查车辆在通信中断过程中的运行情况。 [0007] The present monitoring system in a good coverage area of ​​the mobile network signal, the communication system according to the normal mechanism of the vehicle information and the geographic information is uploaded to the server through the communication module while the downlink server receives various commands and make treatment; in communication the case where blind or communication interruption, the first save vehicle information and the geographic information to the local storage medium, while constantly monitoring the network signal strength, the signal strength satisfies a threshold in a timely manner to connect to the server to store on the local memory card Quick replacement to be a replacement data to the server, ensure timely monitoring personnel to verify the operation of vehicles in communication interruption process.

[0008] 本发明的有益效果是,在不增加额外的通信费用和硬件成本的前提下,带盲区补发功能的车载监控系统通过补发机制能将通信中断过程中的数据在通信恢复后及时补发到服务器,监控人员能及时核查车辆在通信中断过程中的运行情况,最大限度的保证车辆监控的严密性和时效性。 [0008] the beneficial effects of the present invention is that, without additional hardware costs and communication costs of premise, on-board monitoring system with blind reissue reissue mechanism functions through data communication can interrupt the process of recovery after timely communication replacement to the server, the monitoring staff can verify the operation of the vehicle during the interruption of communication, vehicle monitoring to ensure maximum rigor and timeliness.

附图说明 BRIEF DESCRIPTION

[0009] 下面结合附图和实施例对本发明内容作进一步说明。 SUMMARY drawings and embodiments of the present invention will be further described [0009] below in conjunction.

[0010] 图1本发明带盲区补发功能的车载监控系统结构框图; [0010] FIG invention with a replacement vehicle blind block diagram showing the function of the monitoring system;

图2本发明与服务器通信报文帧格式图; 图3本发明系统工作流程图。 Figure 2 of the present invention communicate with the server message frame format; Figure 3 a flowchart of the inventive system.

具体实施方式 detailed description

[0011] 实施例: [0011] Example:

如图1所示,一种带盲区补发功能的车载监控系统,包括微控制器和与微控制器连接的定位模块、通信模块、本地存储介质和传感器。 As shown in FIG. 1 A vehicle with a blind spot monitoring system, a replacement function, and a positioning module including a microcontroller connected to the microcontroller, a communication module, the local storage media and a sensor. 微控制器为STM32F107VCT6,定位模块为GPS接收模块、通信模块为GPRS/CDMA通信模块、本地存储介质为SD卡,传感器为采集车辆行驶数据的各种开关量传感器,继电器为汽车通用继电器。 Microcontroller STM32F107VCT6, GPS positioning module to a receiving module, a communication module GPRS / CDMA communication module, a local storage medium is an SD card, a variety of sensors to acquire vehicle driving data sensor switch, the relay relays for automotive common.

[0012] 微控制器STM32F106VC是整个系统的核心,负责完成如下工作:对GPS接收模块JRC G595接收到的GPS数据进行解析,并通过JRC G595内置的指令集对JRC G595进行设置,如波特率、工作模式、数据帧格式等;读取传感器采集到的车辆行驶信息,如ACC开关状态、汽车电瓶电压、车灯工作状态等;根据解析到的GPS数据和采集到的车辆行驶数据,按照设定的限定条件进行运算并判断车辆是否超速、非法停车、违反地理栅栏限制等报警状态数据;将GPS数据、车辆行驶信息、各种报警状态数据打包成如图2所示的通信报文帧格式;通过MG323模块内置AT指令与MG323进行通信,完成MG323的初始化设置,连接到指定服务器,并按照设定好的时间间隔将通信报文帧上传到服务器;读取MG323接收到的服务器指令,并做出相应的处理。 [0012] The microcontroller is STM32F106VC core of the system, responsible for completing the following tasks: the GPS receiving module JRC G595 received GPS data parsing, and set the JRC G595 by JRC G595 built-in instruction set, such as baud rate , the operation mode, the data frame format; reading sensor acquired vehicle traveling information such as the state of the ACC switch, car battery voltage, working status lights; based on the analysis of the collected GPS data and vehicle driving data, in accordance with the set defining predetermined conditions and determines whether the vehicle speed calculation, illegal parking violation of alarm limits, etc. GeoFence state data; GPS data, vehicle running information, alarm status data is packaged into various communication message frame format as shown in FIG. 2 ; communicate with MG323, MG323 initialization setting is completed, the connection to the specified server, in accordance with predetermined time intervals and to upload to the server communication message frame built by MG323 AT command module; MG323 read command received by the server, and make the appropriate treatment. 根据MG323的反馈判断报文帧的发送是否成功,将发送失败的报文保存到SD卡的文件系统中,之后不断检测网络信号强度,当信号强度满足规定门限时,重新初始化MG323,并重新建立与服务器的连接,连接成功后的补发算法将发送失败的报文补发到服务器,保证监控数据的完整性。 According to whether to send a text frame feedback judgment reported MG323 success, to save failed to send message to the SD card file system, after constantly testing network signal strength, when the signal strength to meet the prescribed threshold, re-initialize MG323, and re-establish connection to the server, the connection is successful replacement algorithm failed to send the message to a server replacement, ensure the integrity of monitoring data. 如车辆出现严重的违规行为,可在服务器端发送远程断电指令,通过安装在点火开关线上的汽车继电器断开点火开关,汽车停车后将不能再点火启动,既起到对车辆和物资的远程控制作用又避免了汽车行驶过程中直接断电的危险性。 The vehicle serious violations, can send remote power-off command on the server side, installed in the car line relay ignition switch off the ignition switch, car parking will not be re-ignition start, both play for the vehicle and supplies remote control action and avoid the danger of cars directly during outages.

[0013] 图2为本发明与服务器主机之间通信所采用的报文帧格式,包括17字节的起始符,2字节的帧长度指示,2字节的帧协议号,N (N ^ 2)字节的数据码,2字节的CRC校验码和I字节的帧尾。 [0013] FIG. 2 of the present invention, the communication between the server and the host is the message frame format, 17 bytes including the start character, 2 bytes indicating the frame length, 2 bytes of frame protocol number, N (N ^ 2) bytes of data symbols, 2-byte CRC, and I-byte frame end. 其中,17字节的起始符包含了帧头、终端编号,服务器编号、通信密码;不同协议号的数据码部分有所不同,常用的数据码包含了完整的GPS地理信息、车辆行驶信息和报警状态信息。 Wherein the starting symbol contains 17 bytes of the header, the terminal ID, the server ID, password communication; data symbols partially different protocol number is different, common data symbol contains a complete GPS geographic information, travel information and vehicle alarm status information.

[0014] 如图3所示,本实施例系统的工作流程是: S301,开始; [0014] As shown in FIG. 3, the workflow system embodiment of the present embodiment is: S301, starts;

S302,GPS模块、GPRS/CDMA模块的初始化,通过计算机AT指令字使GPRS/CDMA模块入网连接到指定服务器,建立终端与服务器的通信链路,到S303 ; S302, GPS module, GPRS / CDMA module initializes the GPRS / CDMA network module connects to the specified server, establishing a communication link terminal and a server, via a computer to S303 AT instruction word;

S303,解析GPS信息、获取传感器参数,到S304 ; S303, parsing GPS information acquisition sensor parameters, to S304,;

S304,将读取到的地理信息和车辆行驶参数信息按照图2的通信报文帧格式打包成帧,并利用AT指令将报文帧发送到服务器,到S305 ; S304,, the read vehicle information and the geographic information packaged in accordance with the communication parameter message framing frame format of FIG. 2, the AT command and the message frame is sent to the server, to S305;

S305,如报文帧成功发送,到S306,如报文帧发送失败,到S307 ; S305, the message frame as successfully sent to S306, the message frame is sent as a failure to S307;

S306,检查是否有待补发的补发帧,如有,到S308,如无,到S309 ; S306, checks whether a frame to be reissued is reissued, if any, to S308, if not, to S309;

S307,将该帧的协议号改写为补发帧的协议号,并保存到本地SD卡的文件系统中,到S312 ; S307, rewrite the protocol number is the frame number of a replacement frame protocol, and saves it to a file system of the SD card to S312;

S308,连续发送10帧补发帧,到S309 ; S308, transmits 10 consecutive replacement frames, to S309;

S309,检测是否接收到服务器下行指令,接收到则转到S310,如没有接收到则到S311 ; S310,解析服务器指令并执行,到S311 ; S309, the server detects whether a downlink instruction received go to S310, as it has not been received to S311; S310, and executes the instruction resolving server to S311;

S311,延时等待规定时间间隔,到S304 ; S311, waits for a predetermined delay time interval, to S304,;

S312,检测当前信号强度是否在门限以上,如信号强度高于门限转到S302,否则到S311。 S312, detecting whether the current signal strength above the threshold, such as the signal strength is above the threshold to S302, otherwise to S311.

[0015] 由上可见,主程序开始运行时先完成GPS模块、GPRS/CDMA模块的初始化工作,通过计算机AT指令字使GPRS/CDMA模块入网连接到指定服务器,建立终端与服务器的通信链路。 [0015] As seen above, the completion of initialization to the GPS module, GPRS / CDMA module main routine starts running, cause a computer instruction word AT GPRS / CDMA network module connects to the specified server, the terminal establishes a communication link with the server. 初始化完成之后开始以约定好的波特率读取GPS模块接收到的定位信息,从中解析出经纬度、方向、速度、海拔、时间、日期等地理信息;同时读取传感器采集到的车辆行驶参数。 After completion of the initialization starts in good agreement baud GPS module reads the received location information, parses GIS latitude and longitude, direction, speed, altitude, time, date and the like; while reading sensor to the vehicle travel parameter collected. 将读取到的地理信息和车辆行驶参数信息按照图2帧格式打包成帧,并利用AT指令将报文帧发送到服务器。 The read vehicle information and the geographic information is framed in accordance with the parameters of FIG. 2 format, and uses the AT command message frame is sent to the server. 如报文帧成功发送,检查是否有待补发的补发帧,如有,则每次连续发送10帧补发帧;如无,则检测是否接收到服务器下行指令;如接收到服务器指令则解析指令并执行指令,如没有接收到指令则等待规定时间,然后进入下一次循环。 The message frame successfully transmitted, to check whether the frame to be reissued is reissued, if so, transmitting each successive replacement frame 10; if no, it is detected whether the server receives a downlink instruction; receiver to the server instruction parsing and executing the instruction, such instruction is not received for a predetermined time is waited, and then enters the next cycle. 如报文发送失败,则将该帧的协议号改写为补发帧的协议号,并保存到本地SD卡的文件系统中,检测当前信号强度是否在门限以上,如信号强度高于门限,则重新初始化GPRS/CDMA模块,并重新连接到服务器指定端口进行通信;如信号强度仍低于门限则等待规定时间后继续下一次循环。 The message transmission fails, then the protocol number is rewritten to the frame number of a replacement frame protocol, and saves it to a file system of the SD card, the detection current signal strength is above a threshold, such as the signal strength is above a threshold, then reinitialize the GPRS / CDMA module, the server and reconnect to the specified port for communication; the signal strength is still below the lower threshold cycle continues after a predetermined waiting time.

Claims (3)

  1. 1. 一种带盲区补发功能的车载监控系统,其特征在于:包括微控制器和与微控制器连接的定位模块、通信模块、本地存储介质和传感器, 所述微控制器的主要功能包括:完成与定位模块、通信模块以及本地存储介质之间的通信,读取定位模块接收到的地理信息,并将信息打包成与服务器约定好的帧格式传输给通信模块或存储在本地存储介质中;解析服务器下行的各种指令,并控制系统完成相应的操作;完成各种Gis算法的运算;采集传感器的数据;与外部I/O设备进行通信;控制终端外接的继电器从而控制车辆; 所述定位模块,接收卫星信号并通过通信接口将经纬度、海拔、时间、方向、速度信息发送给微控制器; 所述通信模块,接收微控制器发出的各种指令,与远程服务器进行全双工的通信; 所述本地储存介质,存储记录微控制器写入的各种数据 A vehicle with a blind spot monitoring system, a replacement function, characterized by: a positioning module comprising a microcontroller and connected to the microcontroller, a communication module, a local storage medium and a sensor, the main function of the microcontroller comprises : the communication between the accumulator and the positioning module, a communication module and a local storage medium geographic positioning module reads the information received, and the information is packed into the storage server to the communication module or a local storage medium in good agreement transmission frame format ; resolution server downlink various commands and corresponding operation completion control system; Gis perform various arithmetic algorithms; collected sensor data; communication with an external I / O devices; external relay control terminal to control the vehicle; the positioning module, and receiving satellite signals via the communication interface latitude and longitude, altitude transmission, time, direction, and speed information to the microcontroller; the communication module, receives various instructions issued by the microcontroller, with a remote server full duplex communication; the local storage medium storing a recording various kinds of data written in the microcontroller 并以规定好的文件格式保存。 And save it in a file format prescribed good.
  2. 2.根据权利要求I所述的带盲区补发功能的车载监控系统,其特征在于:所述的微控制器为STM32F107VCT6。 2. A blind according to claim I with a vehicle monitoring system according to a replacement function, characterized in that: said microcontroller STM32F107VCT6.
  3. 3.根据权利要求I所述的带盲区补发功能的车载监控系统,其特征在于:所述的定位模块为JRCG596。 Blind according to claim I with a vehicle monitoring system according to a replacement function, characterized in that: the module is positioned JRCG596.
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