CN114785867A - Interaction method for service data in green channel management - Google Patents
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Abstract
The invention discloses a method for interacting service data in green traffic lane management, which comprises the following steps: the lane management system encodes and collects the service data according to a specified data structure to form a service data packet load, wherein the service data comprises equipment state information and regional safety index information; then adding a packet head and a packet tail to the service data packet load to form a complete service data packet and transmitting the complete service data packet to a superior management system; the superior management system analyzes the packet head and the packet tail of the service data packet to obtain the service data packet load; the data structure of the application layer is collected and constructed according to the specified data structure, the interface constructs a fixed data structure for the application layer data, and the transmission reliability can be improved, so that the interface data can be processed in an intelligent hardware or programmable firmware mode, the interface information processing speed is greatly accelerated, and the safety and the system stability in a 'road green channel truck X-ray inspection system' are improved.
Description
Technical Field
The invention belongs to the technical field of X-ray inspection systems for trucks in green road channels, and particularly relates to a communication method of an X-ray inspection system for trucks in green road channels.
Background
The road green channel policy is to avoid high speed tolls for vehicles which transport fresh agricultural products and meet the regulations. In the execution process, the green channel vehicles need to be inspected and inspection data, which is called green channel inspection data for short, is used as a free basis. At present, the green channel checking data is transmitted to a national green channel reservation management platform by using a public network (mobile communication network) through a green channel checking mobile phone equipped at an exit toll station of an expressway.
In order to further standardize the management of the green channel service, an X-ray inspection system for a green channel truck on a road needs to be arranged. In the whole service flow, the basic inspection of the passing vehicles is generally completed by fast inspection lane hardware, the lane management functional entity completes the service operation processing of the toll collector, the edge computing node completes the compliance verification of the passing vehicles, the owner/provincial platform/minisial platform performs service management, and the communication data interaction interface completes the data transmission.
Since the inspection system performs an inspection based on X-rays, a certain dose of radiation values is generated in an inspection region and a peripheral region. In order to ensure the safety of the green-pass inspection passage and the peripheral area of the equipment of the highway toll station, the owner platform/provincial platform collects the equipment running state and the area safety radiation index data of each toll station and automatically carries out comprehensive judgment. In order to ensure that the running stable state and the safety state of express lane hardware equipment can be obtained in time, a lane management function entity needs to report the running state and the safety index value (mainly a radiation dosage value obtained by an instrument) of the hardware equipment, so that an owner platform/provincial platform can obtain the express lane hardware state of each toll station at an expressway in time.
The invention relates to a data interaction method between a lane management functional entity and a functional entity of a previous-level system (a provincial level management system or an owner side management system) under a specific service scene of green service inspection, wherein the invention relates to the development process of a road green channel truck X-ray inspection system.
The upper-level system needs to simultaneously carry out butt joint processing on data uploaded by a plurality of lane management functional entities. Safety-related data in a 'road green channel truck X-ray inspection system' requires real-time response of the system, and the safety and the stability of the system are ensured to meet design requirements.
Especially, the data communication software is generally adopted in the traditional computer network data communication mode to complete the information interaction of the interfaces, and the data interaction mode in the computer network lacks a quality of service (QoS) guarantee mechanism, so that the time delay of data transmission is uncontrollable, the response time of the system is prolonged, and the performance of the system is deteriorated.
If the traditional software interaction mode is adopted to process data interaction, certain problems of time delay, reliability and stability can occur if the data interaction amount is large. Meanwhile, the operation state and the safety data of the uploading device are high in importance level, and need to be sent and received by the superior system at the first time when abnormal data occurs, so that the superior system can analyze and issue early warning.
Disclosure of Invention
The invention aims to provide an interaction method of service data in green channel management, which solves the problems that when a truck X-ray inspection system is adopted in a green channel of a road, the throughput of interface data is very large, and certain delay, reliability and stability can occur when data interaction is processed in a traditional software interaction mode; the problems of time delay, congestion and the like in a software interaction mode can be avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an interaction method of service data in green traffic lane management, which comprises the following steps:
the lane management system encodes and collects service data according to a specified data structure to form a service data packet load, wherein the service data comprises equipment state information and regional safety index information; then adding a packet head and a packet tail to the service data packet load to form a complete service data packet, transmitting the service data packet to a network transmission layer, and transmitting the service data packet to a superior management system by the network transmission layer;
the superior management system receives the service data packet, then analyzes the packet head and the packet tail of the service data packet to obtain a service data packet load, if the analysis fails, discards the service data packet, and returns retransmission request information to the lane management system; the lane management system receives the retransmission request information and retransmits the service data packet; if the analysis is successful, recovering the service data packet load into service data, if the service data recovery fails, discarding the data packet load, returning an error code to the upper management system, and if the service data recovery is successful, returning a correct receiving code to the lane management system;
and if the lane management system sends the service data packet to the superior management system, the data packet is repeatedly sent until the transmission of the service data packet is finished.
According to the technology, the interface constructs a fixed data structure for the application layer data through the application layer data structure which is collected and constructed according to the specified data structure, so that the interface data can be automatically analyzed by using an intelligent special chip or a programmable firmware, and the data in the interface is coded and collected, so that the transmission reliability can be improved, and the transmission error which possibly occurs in the transmission process can be found in time; therefore, the interface data can be processed by using intelligent hardware or a programmable firmware mode, so that the processing speed of the interface information is greatly increased, and the safety and the system stability in the X-ray inspection system for the green-channel trucks on the highway are further improved.
In one possible design, the method for forming a complete service data packet by adding a header and a trailer to the service data packet load is as follows: adding a self-defined packet head and a packet tail to a data packet in the process of encapsulating the data packet, wherein the self-defined packet head comprises a plurality of fields, and the plurality of fields represent service data indication information and analyze rules and data processing methods corresponding to the data packet; the custom trailer adds an end flag and a CRC check.
In one possible design, the header includes 5 fields in a fixed order, and the 5 fields are respectively: the ID, the service data type, the number of the service data, the reserved bit and the access certificate of the transmission.
In one possible design, the method for restoring the traffic data packet load to traffic data is: and analyzing the service fields according to the information indicated by the service data type in the packet header according to a fixed sequence.
In one possible design, the device status information includes exit toll station number information, exit toll station name information, device number information, device type information, run-time length information, last device self-check time information, current running status information, metering device number information, measurement value information, and measurement time information; the regional safety index information comprises safety index coding information, safety index name information and safety state information.
In one possible embodiment, after the superior management system receives the service data packet, the superior management system returns a unique identification code to the lane management system.
In one possible embodiment, a plurality of communication links are provided between the lane management system and the superordinate management system, at least one of the communication links being used exclusively for transmitting the service data. The safe radiometric value of equipment running state and multizone is a complete set of complicated data, designs dedicated interface, encodes the data that transmit according to certain rule, can optimize data structure effectively, promotes the analysis and processing speed of platform software to data, reduces data transmission's bandwidth consumption, promotes transmission efficiency. The problem that the time delay of interface data processed by a pure software method by adopting a single transmission link is uncontrollable in the prior art is solved; particularly, for a large-scale deployed 'road green channel truck X-ray inspection system', the throughput of system interface data is high, and the adoption of the interface data construction method can use special intelligent hardware or programmable firmware and can remarkably improve the response speed of the whole system, thereby improving the reliability and stability of the system.
In one possible design, the lane management system includes a first data management module and a first interface management module,
the first data management module is used for managing the summarized equipment state and regional safety index data, and organizing and storing the data according to the requirement of the lane management system;
the first interface management module is used for acquiring service data to be transmitted from the first data management module and constructing a service data packet according to a fixed format requirement; the first interface management module is further configured to transmit the service data packet to a network transport layer, and form a transport data packet according to a network transport protocol.
In one possible embodiment, the upper management system includes a second data management module and a second interface management module,
the second interface management module is used for receiving a transmission data packet transmitted by the lane management system from a network transmission layer, unpacking the transmission data packet, recovering the transmission data packet into a service data packet, analyzing the structure of the service data packet, extracting the service data packet load in the data packet, recovering the service data, and outputting the service data to the second data management module in a strip manner;
and the second data management module receives the service data transmitted by the second interface management module and stores the service data into a local database in order.
Has the beneficial effects that:
1. the invention provides an interaction method of service data in green channel management, an interface constructs a fixed data structure for application layer data, thereby an intelligent special chip or programmable firmware can be used for automatically analyzing the interface data, the problem that the delay of interface data processed by a pure software method is uncontrollable is avoided, a special interface is designed, the transmitted data is coded according to a certain rule, the data structure can be effectively optimized, the analysis and processing speed of platform software on the data is improved, the bandwidth consumption of data transmission is reduced, the transmission efficiency is improved, particularly for a large-scale deployed 'highway green channel truck X-ray inspection system', the system interface data throughput is very large, only by adopting the interface data construction method in the invention, special intelligent hardware or programmable firmware can be used for obviously improving the response speed of the whole system, thereby improving the reliability and stability of the system;
2. the interactive method of the service data in the green traffic lane management can comprehensively obtain and receive the running states of a plurality of hardware devices of a quick-check lane of a toll station at a highway junction in real time; the safe radiation dose values of a plurality of areas of the fast inspection lane of the toll station at the expressway junction can be comprehensively obtained and received in real time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic diagram of a corresponding system structure in an interaction method of service data in green channel management according to the present invention;
fig. 2 is a schematic diagram of a data packet structure in an interaction method of service data in green channel management provided by the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
The data interaction method provided by the first aspect of the invention comprises the following steps:
the lane management system encodes and collects service data according to a specified data structure to form a service data packet load, wherein the service data comprises equipment state information and regional safety index information; then adding a packet header and a packet tail to the service data packet load to form a complete service data packet, specifically, the structure of the service data packet is as shown in fig. 2, and transmitting the service data packet to a network transmission layer, and the network transmission layer transmits the service data packet to a superior management system;
the superior management system receives the service data packet, then analyzes the packet head and the packet tail of the service data packet to obtain the service data packet load, if the analysis fails, discards the service data packet and returns retransmission request information to the lane management system; the lane management system receives the retransmission request information and retransmits the service data packet; if the analysis is successful, recovering the service data packet load into service data, if the service data recovery fails, discarding the data packet load and returning an error code to the upper management system, and if the service data recovery is successful, returning a correct receiving code to the lane management system;
and if the lane management system sends the service data packet to the superior management system, the data packet is repeatedly sent until the transmission of the service data packet is finished.
According to the technology, the interface constructs a fixed data structure for the application layer data through the application layer data structure which is collected and constructed according to the specified data structure, so that an intelligent special chip or programmable firmware can be used for automatically analyzing the interface data, and the data in the interface is coded and collected, so that the transmission reliability can be improved, and transmission errors possibly occurring in the transmission process can be found in time; therefore, the interface data can be processed by using intelligent hardware or programmable firmware, thereby greatly accelerating the processing speed of the interface information, further improving the safety and the system stability in the X-ray inspection system of the green road channel truck,
in a possible implementation, the method for forming a complete service data packet by adding a header and a trailer to the service data packet load is as follows: adding a self-defined header and a self-defined trailer to the data packet in the process of encapsulating the data packet, wherein the self-defined header comprises a plurality of fields, and the plurality of fields represent service data indication information and analyze rules and data processing methods corresponding to the data packet; the custom trailer adds an end flag and a CRC check.
Specifically, as shown in fig. 2, the packet header includes 5 fields in a fixed order, where the 5 fields are: the ID, the service data type, the number of the service data, the reserved bit and the access certificate of the transmission.
Specifically, the method for recovering the service data packet load into service data includes: and analyzing the service fields according to the information indicated by the service data type in the packet header according to a fixed sequence.
In one possible embodiment, the device status information includes exit toll station number information, exit toll station name information, device number information, device type information, run-time length information, last device self-check time information, current running status information, metering device number information, measurement value information, and measurement time information; the regional safety index information comprises safety index coding information, safety index name information and safety state information.
In specific implementation, each piece of service data consists of the following fields, and the fields are separated by { } so as to facilitate program analysis. The fields are arranged in the following fixed order, and the following order is not changeable to reduce the interface data length. The parsing procedure needs to correctly parse the service fields according to the service data type indication information in the packet header and in a fixed order. Examples of traffic fields are as follows:
| name of field | Type of field | Whether or not to fill | Example values | Description of field |
| exitCode | Character string | Is that | Exit toll station numbering | |
| exitName | Character string | Is that | Name of exit toll station | |
| equipmentCode | Character string | Is that | Device numbering | |
| equipmentType | Character string | Is that | Type of device | |
| runDay | Character string | Is that | Has run for a long time (day) | |
| lastSelfCheckingTime | Character string | Is that | Last equipment self-check time | |
| equipmentStatus | Character string | Is that | Current operating state | |
| instrumentCode | Character string | Is that | Numbering of metering devices | |
| radiationValue | Character string | Is that | Measured value | |
| radiationDate | Date and time | Is that | Measuring time | |
| indexCode | Character string | Is that | Security index coding | |
| indexName | Character string | Is that | Name of safety index | |
| safetyStatus | Character string | Is that | Safe state |
Where the example values are not illustrated.
In one possible embodiment, after the superior management system receives the service data packet, the superior management system returns a unique identification code to the lane management system. Specifically, the receiving end processes the data returned after the service data packet:
in one possible embodiment, a plurality of communication links are provided between the lane management system and the superordinate management system, at least one of the communication links being used exclusively for transmitting the service data. The safe radiometric value of equipment running state and multizone is a complete set of complicated data, designs dedicated interface, encodes the data that transmit according to certain rule, can optimize data structure effectively, promotes the analysis and processing speed of platform software to data, reduces data transmission's bandwidth consumption, promotes transmission efficiency. The problem that the time delay of interface data processed by a pure software method by adopting a single transmission link is uncontrollable in the prior art is solved; particularly, for a large-scale deployed 'road green channel truck X-ray inspection system', the throughput of system interface data is high, and the adoption of the interface data construction method can use special intelligent hardware or programmable firmware and can remarkably improve the response speed of the whole system, thereby improving the reliability and stability of the system.
Specifically, as shown in the corresponding system structure diagram provided in fig. 1, the lane management system is a lane management function entity in the diagram, the upper management system is a management function entity at the upper level in the diagram, the communication transmission link of the interface a in the diagram is an equipment state and area safety monitoring interface between the lane management function entity and the green channel service management entity at the upper level, the interface E is an early warning data issue between the green channel service management entity at the upper level and the lane management function entity, the interface G is a green channel inspection comprehensive data interface between the lane management function entity and the green channel service management entity at the upper level, the interface C is a calculation data interface between the lane management function entity and an edge calculation node, and the interface U is a remote upgrade data interface between the green channel service management entity at the upper level and the edge calculation node. The information transfer of the a interface has a strong real-time requirement. Because the upper-level management system needs to process different task requests of a large number of lane management entities in the normal service process, if a conventional computer data communication mode is adopted, certain data delay is caused. Therefore, the interface data structure is constructed, and the data processing of the interface is suitable for the data processing mode of programmable firmware or large-scale integrated circuits.
In a possible implementation manner, the lane management system includes a first data management module and a first interface management module, where the first data management module is configured to manage the collected device status and regional safety index data, and organize and store the data according to the requirements of the lane management system; specifically, the data is mainly sorted, organized and stored according to the requirements of other modules of the system, so as to be called by other functional modules, for example, for drawing, displaying, transmitting and the like of the data. In the interface, a first data management module prepares data to be sent according to a specified rule and waits for transmission.
The first interface management module is used for acquiring service data to be transmitted from the first data management module and constructing a service data packet according to a fixed format requirement; the first interface management module is further configured to send the service data packet to a network transport layer, and form a transport data packet according to a network transport protocol. Specifically, the header and the trailer of the transmission data packet use the existing network protocol. In general, a network transport layer is an IP layer, and a transport packet is used as IP layer load data and is encapsulated into an IP packet according to an IP protocol for transmission.
In one possible embodiment, the upper management system comprises a second data management module and a second interface management module,
the second interface management module is used for receiving a transmission data packet transmitted by the lane management system from a network transmission layer, unpacking the transmission data packet, recovering the transmission data packet into a service data packet, analyzing the structure of the service data packet, extracting the service data packet load in the data packet, recovering the service data, and outputting the service data to the second data management module in a strip manner;
and the second data management module receives the service data transmitted by the second interface management module and stores the service data into a local database in order. In a specific implementation, the service data of a superior service management system, such as an owner or a provincial-green-communication service management system, is orderly stored in a local database to be called by other function modules of the owner/provincial-green-communication service management entity.
In summary, in the method provided by the present invention, the interface constructs a fixed data structure for the application layer data, so that the interface data can be automatically analyzed by using an intelligent dedicated chip or a programmable firmware, and the problem of uncontrollable time delay in processing the interface data by a pure software method is avoided. Particularly, for a large-scale deployed 'road green channel truck X-ray inspection system', the system interface data throughput is high, and the response speed of the whole system can be obviously improved only by adopting the interface data construction method provided by the invention and using special intelligent hardware or programmable firmware, so that the reliability and stability of the system are improved.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for interacting service data in green channel management is characterized by comprising the following steps:
the lane management system encodes and collects service data according to a specified data structure to form a service data packet load, wherein the service data comprises equipment state information and regional safety index information; then adding a packet head and a packet tail to the service data packet load to form a complete service data packet, transmitting the service data packet to a network transmission layer, and transmitting the service data packet to a superior management system by the network transmission layer;
the superior management system receives the service data packet, then analyzes the packet head and the packet tail of the service data packet to obtain the service data packet load, if the analysis fails, discards the service data packet and returns retransmission request information to the lane management system; the lane management system receives the retransmission request information and retransmits the service data packet; if the analysis is successful, recovering the service data packet load into service data, if the service data recovery fails, discarding the data packet load, returning an error code to the upper management system, and if the service data recovery is successful, returning a correct receiving code to the lane management system;
and if the lane management system sends the service data packet to the superior management system, the data packet is repeatedly sent until the service data packet is completely transmitted.
2. The method for interacting service data in green channel management according to claim 1, wherein the method for adding a header and a trailer to the service data packet load to form a complete service data packet comprises: adding a self-defined packet head and a packet tail to a data packet in the process of encapsulating the data packet, wherein the self-defined packet head comprises a plurality of fields, and the plurality of fields represent service data indication information and analyze rules and data processing methods corresponding to the data packet; the custom trailer adds an end flag and a CRC check.
3. The method of claim 1, wherein the header comprises 5 fields in a fixed order, and the 5 fields are respectively: the ID, the service data type, the number of service data, the reserved bit and the access certificate of the transmission.
4. The method for interacting traffic data in green channel management according to claim 3, wherein the method for restoring the traffic data packet load to traffic data is: and analyzing the service fields according to the information indicated by the service data type in the packet header according to a fixed sequence.
5. The interaction method for service data in green channel management according to claim 1, wherein the device status information includes exit toll station number information, exit toll station name information, device number information, device type information, long information when running, last device self-checking time information, current running status information, metering device number information, measurement value information, and measurement time information; the regional safety index information comprises safety index coding information, safety index name information and safety state information.
6. The method as claimed in claim 1, wherein the superior management system returns a unique identification code to the lane management system after receiving the service data packet.
7. The method for interacting the service data in the green channel management as claimed in claim 1, wherein a plurality of communication transmission links are provided between the channel management system and the upper management system, and at least one of the plurality of communication transmission links is only used for transmitting the service data.
8. The method of interacting traffic data in green channel management according to claim 1, wherein the lane management system includes a first data management module and a first interface management module,
the first data management module is used for managing the summarized equipment state and regional safety index data, and organizing and storing the data according to the requirements of the lane management system;
the first interface management module is used for acquiring service data to be transmitted from the first data management module and constructing a service data packet according to a fixed format requirement; the first interface management module is further configured to transmit the service data packet to a network transport layer, and form a transport data packet according to a network transport protocol.
9. The method of claim 1, wherein the upper management system comprises a second data management module and a second interface management module,
the second interface management module is used for receiving a transmission data packet transmitted by the lane management system from a network transmission layer, unpacking the transmission data packet, recovering the transmission data packet into a service data packet, analyzing the structure of the service data packet, extracting the service data packet load in the data packet, recovering the service data, and outputting the service data to the second data management module in a strip manner;
and the second data management module receives the service data transmitted by the second interface management module and stores the service data into a local database in order.
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