CN110113239A - A kind of networking technology of special type chassis monitoring system - Google Patents

Abstract

The invention provides a networking technology of a special vehicle chassis monitoring system, including CAN bus network, Ethernet and gateway; the CAN bus network is used for the bottom layer control and information collection of the special vehicle chassis monitoring system; the Ethernet is used for the special vehicle chassis monitoring The upper layer of the system sends external information; CAN bus network includes CAN1 network segment and CAN2 network segment, CAN2 network segment includes CAN bus nodes connected to the power system in the chassis monitoring system of special vehicles, and CAN1 network segment includes CAN bus nodes connected to the chassis monitoring system of special vehicles The CAN bus nodes of other systems except the power system; the gateway can interconnect CAN1 network segment and CAN2 network segment, and interconnect CAN1 network segment and CAN2 network segment with Ethernet. The CAN bus network of the networking technology of the present invention is divided into a CAN1 network segment and a CAN2 network segment to ensure real-time performance of the system, reduce the bus load rate of the CAN bus network, have strong system expansion capabilities, and improve the security and reliability of the system network. High data transmission efficiency, low gateway cost, strong versatility, and strong data sharing capabilities.

Description

A Networking Technology of Special Vehicle Chassis Monitoring System

technical field

The invention relates to the field of monitoring system networking, in particular to a networking technology of a special vehicle chassis monitoring system.

Background technique

At present, with the development and wide application of computer, automatic control, and network technology, the collection, transmission, and sharing of various data information are becoming more and more common. The automobile industry is no exception. With the successful application of various ECUs, the sharing of various monitoring data and real-time effective transmission of automobile electronics and its network technology, the level of automobile automation and informatization has been greatly improved.

The special vehicle chassis monitoring system is based on automotive electronics and its network technology. It is a monitoring system designed to realize the function control, status monitoring and collection, data storage and transmission, and safety alarm of each sub-system of the special vehicle chassis. Including torque converter temperature control, suspension height adjustment control, transfer case gear position control, transfer case heat dissipation control, transfer case power take-off control, gearbox power take-off control, lighting system control, wheel lock control, axle lock control ; Data collection, storage, and transmission of alarms for engine, torque converter, wheel lock status, shaft lock status, oil filter status, fuel tank status, etc. The system involves many control objects and transmits a large amount of data, so how to network the system is a very critical issue.

The networking technology of the ordinary special vehicle chassis monitoring system often has a large number of electronic control units (referred to as ECUs) on the same network segment, and the bus load rate is high; a single gateway device not only increases the cost, but also has a high rate of repeated data transmission and reception; it is not conducive to System network expansion and other issues.

Contents of the invention

The purpose of the present invention is to provide a networking technology for a special vehicle chassis monitoring system, which is used to solve the problems of large number of electronic control units in the same network segment, high bus load rate, high cost and high data repetition rate in the prior art. question.

To achieve the above object, the present invention provides the following technical solutions:

A networking technology for a special vehicle chassis monitoring system, including CAN bus network, Ethernet and gateway; the CAN bus network is used for the bottom layer control and information collection of the special vehicle chassis monitoring system; the Ethernet is used for the special vehicle chassis The upper layer of the monitoring system sends external information;

Described CAN bus network comprises CAN1 network segment and CAN2 network segment, and described CAN2 network segment comprises the CAN bus node that connects the power system in the special vehicle chassis monitoring system, and described CAN1 network segment comprises connection except in the special vehicle chassis monitoring system CAN bus nodes of systems other than the power system;

The gateway can interconnect the CAN1 network segment and the CAN2 network segment, and interconnect the CAN1 network segment and the CAN2 network segment with the Ethernet.

Wherein, the gateway adopts an intelligent display and control unit.

Wherein, the CAN bus nodes of the CAN2 network segment include an intelligent display and control unit node, an engine controller local area network node, a torque converter controller local area network node and a debugging and diagnostic instrument node.

Wherein, the CAN bus nodes of the CAN1 network segment include intelligent display and control unit nodes, integrated control unit nodes, general control unit nodes, suspension control unit nodes, driving monitoring main screen nodes, driving monitoring secondary screen nodes, and three-proof general CAN nodes and debug diagnostic instrument nodes.

Wherein, the intelligent display and control unit node is connected to the intelligent display and control unit;

The engine controller local area network node is connected to the engine controller local area network, and the engine controller local area network can collect and function control the signals of the engine system in the special vehicle chassis monitoring system;

The torque converter controller local area network node is connected to the torque converter controller local area network, and the torque converter controller local area network can collect signals and control functions of the torque converter system in the special vehicle chassis monitoring system.

Wherein, the integrated control unit node is connected with the integrated control unit, and the integrated control unit can collect the status signal and control the function of the special vehicle chassis monitoring system;

The general control unit node is connected to the general control unit, and the general control unit completes the connected input signal collection and output signal control according to the instructions of the comprehensive control unit, and cooperates with the comprehensive control unit to complete various state collection and function control;

The suspension control unit node is connected to the suspension control unit, and the suspension control unit can collect signals and control functions of the suspension control system of the special vehicle chassis;

The driving monitoring main screen node is connected to the driving monitoring main screen, and the driving monitoring secondary screen node is connected to the driving monitoring secondary screen. The driving monitoring main screen and the driving monitoring secondary screen can monitor the signals of the driving monitoring system in the special vehicle chassis monitoring system. Acquisition, splicing, calculation and display;

The three-proof universal CAN node is connected with the three-proof control unit, and the three-proof control unit can collect and function control the signals of the three-proof system in the special vehicle chassis monitoring system.

Wherein, the debugging and diagnostic instrument nodes of the CAN1 network segment and the CAN2 network segment are respectively the CAN1 diagnostic port and the CAN2 diagnostic port, and the CAN1 diagnostic port and the CAN2 diagnostic port are connected to the CAN bus network and the debugging diagnostic instrument, and the The debugging diagnostic instrument is used to diagnose or debug the working status of the special vehicle chassis monitoring system.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above scheme:

(1) The CAN bus network of the networking technology of the special vehicle chassis monitoring system of the present invention is divided into CAN1 network segment and CAN2 network segment, which has not only ensured the real-time performance of the system, but also reduced the bus load rate of the CAN bus network, and system expansion strong ability;

(2) The networking technology of the special vehicle chassis monitoring system of the present invention separates and manages the special vehicle power system in the special vehicle chassis monitoring system of the present invention from other functional systems, which is conducive to improving the safety and reliability of the system network;

(3) The interface function of the networking technology of the special vehicle chassis monitoring system of the present invention is strong, and the intelligent display and control unit with fast operating speed is used as the gateway of the CAN1 network and the CAN2 network, and the Ethernet site for external data transmission, data transmission High efficiency and reduced gateway cost;

(4) The networking technology of the special vehicle chassis monitoring system of the present invention uses Ethernet to send data externally, which has strong versatility and strong data sharing ability.

Description of drawings

Fig. 1 is a schematic diagram of the networking technology of the special vehicle chassis monitoring system of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

Aiming at the existing problems of large number of electronic control units in the same network segment, high bus load rate, high cost and high rate of repeated data transmission and reception, the invention provides a networking technology for a special vehicle chassis monitoring system.

As shown in Figure 1, the embodiment of the present invention provides a kind of networking technology of special vehicle chassis monitoring system, including CAN bus network, Ethernet and gateway; CAN bus network is used for the underlying control and information of special vehicle chassis monitoring system Acquisition; Ethernet is used to send external information from the upper layer of the special vehicle chassis monitoring system;

CAN bus network includes CAN1 network segment and CAN2 network segment. CAN2 network segment includes CAN bus nodes connected to the power system in the special vehicle chassis monitoring system. CAN1 network segment includes connections to other systems in the special vehicle chassis monitoring system except the power system. CAN bus node;

The gateway can interconnect CAN1 network segment and CAN2 network segment, and interconnect CAN1 network segment and CAN2 network segment with Ethernet.

The networking technology of the special vehicle chassis monitoring system of the present invention solves the problems of high bus load rate, high cost and high data repeat sending and receiving rate of the existing special vehicle chassis monitoring system. The CAN bus network used for the underlying control and information collection of the special vehicle chassis monitoring system includes CAN1 network segment and CAN2 network segment, which not only ensures the real-time performance of the system, but also reduces the bus load rate of the CAN bus network, and has strong system expansion ability . The CAN2 network segment includes the CAN bus node connected to the power system in the special vehicle chassis monitoring system, that is, the CAN2 network segment connects to the power system in the special vehicle chassis monitoring system, and the CAN1 network segment includes connections to the special vehicle chassis monitoring system except for the power system. The CAN bus node of other systems, the CAN1 network segment is connected to other systems other than the power system in the special vehicle chassis monitoring system, and the special vehicle power system is separated from other functional systems, which is conducive to improving the security and reliability of the system network; Ethernet is used for data transmission, which has strong versatility and strong data sharing ability.

The Ethernet of the networking technology of the invented special vehicle chassis monitoring system is an open general network. The Ethernet data communication object of the monitoring system is the vehicle information switch, which can conveniently and flexibly expand other Ethernet communication objects. The data communication content is designed in a custom data format, which is flexible and convenient to increase or decrease.

Among them, the gateway adopts an intelligent display and control unit.

The interface function of the networking technology of the special vehicle chassis monitoring system of the present invention is strong, and the intelligent display and control unit with fast operation speed is used as the gateway of the CAN1 network and the CAN2 network, and an Ethernet station for external data transmission, and the data transmission efficiency is high. Reduced gateway cost

Among them, the CAN bus nodes of the CAN2 network segment include intelligent display and control unit nodes, engine controller local area network nodes, torque converter controller local area network nodes and debugging diagnostic instrument nodes.

The data communication protocol of the CAN2 network segment of the networking technology of the special vehicle chassis monitoring system of the present invention is a standard protocol that meets the requirements of J1939, and the PGN code and the SPN code are all in line with the J1939 general standard protocol.

Among them, the CAN bus nodes of the CAN1 network segment include intelligent display and control unit nodes, integrated control unit nodes, general control unit nodes, suspension control unit nodes, driving monitoring main screen nodes, driving monitoring secondary screen nodes, three-proof general CAN nodes and debugging Diagnostic node.

The data communication protocol of the CAN1 network segment of the networking technology of the special vehicle chassis monitoring system of the present invention is a self-defined address segment that meets the requirements of J1939, and the ID number and physical quantity of the message can be defined by itself.

Among them, CAN1 network segment and CAN2 network segment debugging diagnostic instrument nodes are CAN1 diagnostic port and CAN2 diagnostic port, CAN1 diagnostic port and CAN2 diagnostic port are connected to CAN bus network and debugging diagnostic instrument, and debugging diagnostic instrument is used for special vehicle chassis monitoring system work Status diagnostics or debugging.

Among them, the intelligent display and control unit node is connected to the intelligent display and control unit;

The engine controller local area network node is connected to the engine controller local area network, and the engine controller local area network can collect and function control the signals of the engine system in the special vehicle chassis monitoring system;

The torque converter controller local area network node is connected to the torque converter controller local area network, and the torque converter controller local area network can collect signals and control functions of the torque converter system in the special vehicle chassis monitoring system.

Among them, the integrated control unit node is connected to the integrated control unit, and the integrated control unit can collect the status signal and control the function of the special vehicle chassis monitoring system;

The general control unit node is connected to the general control unit, and the general control unit completes the connected input signal collection and output signal control according to the instructions of the comprehensive control unit, and cooperates with the comprehensive control unit to complete various state collection and function control;

The suspension control unit node is connected to the suspension control unit, and the suspension control unit can collect and control the signals of the suspension control system of the special vehicle chassis;

The driving monitoring main screen node is connected to the driving monitoring main screen, and the driving monitoring secondary screen node is connected to the driving monitoring secondary screen. The driving monitoring main screen and the driving monitoring secondary screen can collect, stitch, calculate and display the signals of the driving monitoring system in the special vehicle chassis monitoring system;

The three-proof universal CAN node is connected to the three-proof control unit, and the three-proof control unit can collect and function control the signals of the three-proof system in the special vehicle chassis monitoring system.

The intelligent display and control unit of the networking technology of the special vehicle chassis monitoring system of the present invention is the human-computer interaction interface of the entire chassis monitoring system, and realizes all human-computer interaction functions of the entire chassis system; data storage function; between CAN1 and CAN2, CAN1 And the gateway function between CAN2 network and Ethernet. The integrated control unit is responsible for the state signal acquisition and function control of the entire chassis (except independent functions). According to the instructions of the integrated control unit, the general control unit completes the connected input signal acquisition and output signal control, and cooperates with the integrated control unit to complete various state acquisition and function control. The suspension control unit is specially responsible for the signal acquisition and function control of the suspension control system. The three-proof control unit is specially responsible for the signal acquisition and function control of the three-proof system. The driving monitoring main screen and the driving monitoring sub-screen are specially responsible for the signal acquisition splicing calculation and display of the driving monitoring system. The engine ECU is specially responsible for the signal acquisition and function control of the engine system. The torque converter ECU is specially responsible for the signal acquisition and function control of the torque converter system. The debugging diagnostic instrument is connected to the CAN network system of the chassis through the CAN1 diagnostic port and the CAN2 diagnostic port to diagnose or debug the system working status, including system parameter setting and maintenance operations.

In the above scheme, the CAN bus network of the networking technology of the special vehicle chassis monitoring system of the present invention is divided into a CAN1 network segment and a CAN2 network segment, which not only ensures the real-time performance of the system, but also reduces the bus load rate of the CAN bus network. Strong expansion ability; the networking technology of the special vehicle chassis monitoring system of the present invention separates and manages the special vehicle power system and other functional systems in the special vehicle chassis monitoring system of the present invention, which is conducive to improving the security and reliability of the system network; The interface function of the networking technology of the special vehicle chassis monitoring system of the present invention is strong, and the intelligent display and control unit with fast operation speed is used as the gateway of the CAN1 network and the CAN2 network, and an Ethernet station for external data transmission, and the data transmission efficiency is high. The cost of the gateway is reduced; the networking technology of the special vehicle chassis monitoring system of the present invention adopts the Ethernet for external data transmission, which has strong versatility and strong data sharing ability.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "one end", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "equipped with" and "connected" should be interpreted in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediary. Fixed connections can be common technical solutions such as welding, screwing and tightening. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The above are the preferred embodiments of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (7)

1. a kind of networking technology of special type chassis monitoring system, which is characterized in that including CAN bus network, Ethernet and net It closes；The CAN bus network is used for the bottom control and information collection of extraordinary chassis monitoring system；The Ethernet is for spy The information that the upper layer of kind chassis monitoring system is external is sent；

The CAN bus network includes CAN1 network segment and CAN2 network segment, and the CAN2 network segment includes connecting extraordinary chassis monitoring The CAN bus node of dynamical system in system, the CAN1 network segment include connecting removing in extraordinary chassis monitoring system to move The CAN bus node of other systems other than Force system；

The gateway can to the CAN1 network segment and CAN2 network segment interconnection, the CAN1 network segment and CAN2 network segment and it is described with Too net interconnection.

2. the networking technology of special type chassis monitoring system as described in claim 1, which is characterized in that the gateway uses intelligence It can display and control unit.

3. the networking technology of special type chassis monitoring system as claimed in claim 2, which is characterized in that the CAN2 network segment CAN bus node includes intelligent display and control unit node, engine controller local area network node, torque-converters controller local area network Node and debugging diagnostic apparatus node.

4. the networking technology of special type chassis monitoring system as claimed in claim 2, which is characterized in that the CAN1 network segment CAN bus node includes intelligent display and control unit node, comprehensively control cell node, universal control unit node, Suspension control list First node, driving monitoring main screen node, driving monitoring vice screen node, three proofings universal CAN node and debugging diagnostic apparatus node.

5. the networking technology of special type chassis monitoring system as claimed in claim 3, which is characterized in that the aobvious control of the intelligence is single First node connection intelligent display and control unit；

The engine controller local area network node connects engine controller local area network, the engine controller local Network can be acquired to the signal of the engine system in extraordinary chassis monitoring system and function control；

Torque-converters controller local area network node connects torque-converters controller local area network, the torque-converters controller local Network can be to the signal acquisition and function control of the torque converter system in extraordinary chassis monitoring system.

6. the networking technology of special type chassis monitoring system as claimed in claim 4, which is characterized in that

The comprehensively control cell node connects comprehensively control unit, and the comprehensively control unit, which can monitor extraordinary chassis, is The status signal of system is acquired and function is controlled；

The universal control unit node connection universal control unit, the universal control unit according to comprehensively control unit finger It enables, completes connected input signal acquisition and output signal control, cooperation comprehensively control unit completes every state acquisition and function Control；

The control unit node connects control unit, and the control unit can be to the suspension of extraordinary chassis The signal of control system is acquired to be controlled with function；

The driving monitoring main screen node connection driving monitoring main screen, the driving monitoring vice screen node connection driving monitoring are secondary Screen, the driving monitoring main screen and driving monitoring vice screen can be to the driving monitoring systems in extraordinary chassis monitoring system Signal is acquired splicing and calculates and show；

The three proofings universal CAN node connects three proofings control unit, and three proofings control unit can be in extraordinary chassis monitoring system The signal of NBC protection system be acquired and function control.

7. such as the networking technology of extraordinary chassis monitoring system as claimed in any one of claims 3 to 4, which is characterized in that described The debugging diagnostic apparatus node of CAN1 network segment and the CAN2 network segment is respectively CAN1 diagnostics port and CAN2 diagnostics port, and the CAN1 is examined Fracture connects CAN bus network and debugging diagnostic apparatus with the CAN2 diagnostics port, and the debugging diagnostic apparatus carries out extraordinary chassis The diagnosis of monitoring system working condition or debugging.