CN111405518A

CN111405518A - Method and equipment for monitoring vehicle state by unidirectional data flow

Info

Publication number: CN111405518A
Application number: CN201910003882.XA
Authority: CN
Inventors: 宋有
Original assignee: Beijing Jinbenteng Auto S & T Co ltd
Current assignee: Beijing Jinbenteng Auto S & T Co ltd
Priority date: 2019-01-03
Filing date: 2019-01-03
Publication date: 2020-07-10

Abstract

The invention discloses a method and equipment for realizing monitoring of vehicle states by using unidirectional data flow, which comprises a vehicle-mounted monitoring instrument and a server for providing information processing and alarm triggering. The vehicle-mounted monitor is connected with a vehicle OBD interface, and after the vehicle-mounted monitor is connected with the vehicle OBD interface for the first time, the vehicle VIN is read and sent to the server to verify the validity; and then monitoring the vehicle by detecting the connection state of an OBD power supply pin, sending a heartbeat packet and position information to a server by using a UDP (user datagram protocol) at every certain interval by using a vehicle-mounted monitoring instrument, judging the effectiveness of the vehicle and judging whether the vehicle is separated from monitoring or not by receiving and sorting the received data by the server, and notifying a warning message that the vehicle is separated from monitoring to a client by a mail, a short message and a website message. The invention realizes the unidirectional flow of data from the vehicle-mounted monitor to the server to the client (loan company), realizes the vehicle monitoring in light weight, and does not need data reflux.

Description

Method and equipment for monitoring vehicle state by unidirectional data flow

Technical Field

The invention relates to a method and equipment for monitoring a vehicle state by using unidirectional data flow.

Background

Along with the development of financial business in China and the increasing prosperity of folk loan, various loan companies participate in the market transaction process, and the small loan company, the folk loan intermediary agency and the P2P network loan become the dominant force of the prosperity loan market besides bank loan.

In order to deliver competitive and attractive products in a competitive market, effective monitoring and risk control of the vehicle under mortgage becomes important, and the following problems exist for the lending company:

1. the identity of the monitored vehicle is verified;

2. the vehicle position can be checked in real time;

3. the system can ensure that the pledge vehicle is in the system monitoring range;

4. some vehicles can only run within a specified range;

5. ensuring that the pledge vehicle can be monitored all the time in the pledge period;

6. the monitoring cost is high, and the cost of the memory, calculation and broadband resources of the server is high;

therefore, a solution is provided at the present stage, an effective guarantee means can be provided for real-time vehicle monitoring, the target is low cost and volume, better experience, simpler operation, less flow and resource occupation, and the monitoring cost and the user experience of the pledge vehicle can be greatly improved.

Disclosure of Invention

The invention aims to provide a scheme for solving the real-time monitoring of a pledge vehicle with light weight and low cost. In order to realize the scheme, the vehicle-mounted monitoring instrument reads the vehicle VIN and the circuit state, sends data to the server at intervals, and the server processes and informs a client (loan company) of an alarm, so that the data flow from the vehicle-mounted monitoring instrument to the client in one direction is realized.

Drawings

FIG. 1 is a data flow diagram of the method of the present invention;

FIG. 2 is a flow diagram of the server data snoop processing principle of the present invention;

FIG. 3 is a timing diagram of the principle of operation of the system of the present invention;

Detailed Description

Referring to fig. 1, when a vehicle is connected for the first time, a vehicle-mounted monitoring instrument of the method reads a VIN of the vehicle and sends the VIN to a server for verification, if the VIN is not in accordance with a VIN bound to equipment, an unbound vehicle alarm is triggered, and a customer (lending company) is notified by an email and a short message;

the vehicle-mounted monitoring instrument monitors the circuit connection state of the vehicle in real time, when the circuit connection of the vehicle is disconnected (equipment is removed), a device disconnection event is triggered, the vehicle-mounted monitoring instrument sends a frame of UDP device disconnection data packet, the server analyzes the vehicle bound by the device after receiving the data packet, the device disconnection alarm is triggered, and a client (loan company) is notified through mails and short messages;

the vehicle-mounted monitor sends a frame of UDP heartbeat data packet at regular intervals, the server resets the online time of the equipment after receiving the data packet, triggers the offline alarm of the equipment when the data packet in the equipment center is not received within a certain time, and informs a client (lending company) through a mail and a short message;

the vehicle-mounted monitoring instrument sends a frame of UDP position data packet at regular intervals, the server receives the position data packet to check whether the vehicle runs in a specified range or not, when the vehicle runs in an out-of-range, an out-of-range running alarm is triggered, and a client (lending company) is notified by mails and short messages;

referring to fig. 2, a flow chart of a server data monitoring operation principle of the present invention describes that the server checks every certain time when the server is running, whether a monitoring-required device list has a timeout and does not receive a data packet in a device center, if not, a device offline alarm is triggered, and a client (lending company) is notified by mail and short message;

when the server receives the vehicle VIN data packet, whether the vehicle VIN bound by the vehicle-mounted monitoring instrument is consistent or not is compared, if the vehicle VIN bound by the vehicle-mounted monitoring instrument is not consistent, an unbound vehicle alarm is triggered, and a client (a lending company) is notified through an email and a short message;

when the server receives the GPS data packet, whether the vehicle is in a set driving range or not is checked, if the vehicle exceeds the driving range, an over-range driving alarm is triggered, and a client (loan company) is notified through mails and short messages;

when the server receives an equipment disconnection data packet of the vehicle-mounted monitor, triggering equipment disconnection alarm, and informing a client (a loan company) through an email and a short message;

referring to fig. 3, the sequence diagram of the operation principle of the system of the present invention describes the transmission time and the processing time sequence of each data packet.

Claims

1. A method and device for monitoring vehicle state by using unidirectional data flow direction is characterized in that: data are unidirectionally transmitted from the vehicle-mounted monitoring instrument to a client (loan company), and no data flow back occurs; the vehicle-mounted monitoring instrument is connected with the vehicle OBD interface to acquire the vehicle VIN to verify the validity, and the purpose of monitoring whether the vehicle is pulled out or not is achieved by monitoring the power supply connection state of the OBD pins, and the vehicle-mounted monitoring instrument mainly comprises the following steps:

the vehicle-mounted monitoring instrument is connected with the automobile through an automobile OBD interface, and if the automobile is in an ignition state or is ignited for the first time, the vehicle-mounted monitoring instrument can read the VIN and send the VIN to the server for validity verification.

And the vehicle-mounted monitor monitors the power supply connection state of the OBD pin to judge whether the equipment is excluded, and sends a frame of UDP data packet to the server every 30 seconds.

And the server analyzes and judges according to the set equipment binding relationship and the received data packet, and pushes related information to a set mailbox and a set mobile phone in time after the occurrence of events such as inconsistency, offline, boundary crossing and the like.

2. The server of claim 1 needs to set a vehicle VIN bound by the vehicle-mounted monitoring instrument, and when the server receives the vehicle VIN sent by the vehicle-mounted monitoring instrument, the server determines whether the vehicle VIN is the same as the bound vehicle VIN, and sends an alarm that the VIN does not conform to the specified mailbox and the mobile phone if the vehicle VIN is different from the bound vehicle VIN.

3. The vehicle-mounted monitoring instrument according to claim 1 sends a frame of UDP data containing position information every 300 seconds, the server analyzes and judges whether the vehicle is driving out of the specified range after receiving the data, and the system sends corresponding alarm information to the specified mailbox and the mobile phone after the vehicle is driving out of the specified range.

4. The vehicle-mounted monitoring instrument of claim 1 monitors whether the OBD circuit is disconnected through the monitoring instrument circuit, immediately sends a frame of UDP message for circuit disconnection alarm to the server when the OBD circuit is monitored to be disconnected, the server analyzes the device number after receiving the alarm message, binds the vehicle information and the vehicle position information received finally through inquiring the device, and sends the information to the set mailbox and the mobile phone.

5. The server of claim 1 determines that the device (vehicle) is off-line when the server does not receive the data sent by the vehicle-mounted monitoring instrument for more than 300 seconds, and sends a vehicle-off monitoring alarm to a set mailbox and a mobile phone.

6. The vehicle-mounted monitoring instrument according to claim 1 sends data to the server through UDP, and sends an alarm to a client (lending company) through mail and short message after service processing, thereby realizing unidirectional flow of data.

7. According to the claim 1, the server receiving the UDP data packet saves a lot of memory and bandwidth resources compared with the conventional TCP data packet, and realizes a lightweight solution for monitoring the vehicle.

8. According to the method of claim 1, the vehicle-mounted monitoring instrument and the server adopt a UDP communication protocol, the load capacity of the server is at least expanded by more than 5 times by using UDP one-way communication compared with the traditional TCP method, and under the condition that the server is configured identically, the cost of the server is at least 4 times that of the client equipment loaded by the traditional method, so that more vehicles can be monitored with the same server cost.