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Chapter 1 Preface
1.1 Overview
At present, with the increasing number of urban taxis, it is not uncommon for fake taxis to operate illegally. Many new problems have emerged in the operation and management of taxis. It is difficult to achieve effective management by simply verifying the authenticity of taxis through the license plate. Therefore, Chengdu Lingtai Technology Co., Ltd., through many years of strong development capabilities and practical system experience in the field of RFID, on the basis of the handheld PDA system independently developed by our company, through the most advanced RFID electronic tag technology, builds taxi electronics The operating permit system makes black taxis such as twin cars and licensed cars nowhere to hide. At the same time, it can also handle the anti-counterfeiting of taxi vehicles, driver qualification information, vehicle operation and violation information, registration and punishment of driver violation information, and vehicle annual review records. Through the operation of this system, good actual management effects and social benefits can be achieved, and the functional management departments can be informatized and efficient, and at the same time, the vital interests of taxis can be protected.
1.2 System function
The management department issues electronic label-type electronic operation certificates through the taxi electronic operation certificate management software platform. The electronic operation certificate records the owner’s name, ID number, contact phone number, license plate number, unit, first contact person, contact phone number, and brand model. , Car purchase time, engine number, frame number, affiliated company, issuance time, effective time and other management information. All data is encrypted by 128-bit AES encryption algorithm, which overcomes the security risks of pure storage content encryption and achieves complete imitation. Purpose.
After the electronic operation certificate is issued, it is fixed at the windshield on the right side of the taxi (inside the car). It is a proof of the legality of taxi operation. At the same time, the electronic operation certificate adopts a striking logo design and has an intuitive counterfeit function.
The handheld PDA is used to conduct the inspection of the electronic operation certificate, query information and data modification, and make an alarm for illegal vehicles.
Carry out various management of taxi data through the taxi electronic operation certificate management software platform, including the issuance, cancellation, reissue, query of electronic operation certificate, collection of handheld PDA audit data, performance appraisal of inspectors, generation and printing of various reports .
Illegal vehicles can be investigated and dealt with by mobile operations. Law enforcement officers can sit in a driving law enforcement vehicle, and when encountering a driving commercial vehicle, they only need to use the handheld inspection function to return within 1 second whether the vehicle is illegal Operating vehicles. The operating vehicle speed is valid within 200 kilometers.
The method of fixed-point operation can be adopted: the detection base station can be set up on each arterial road (the monitoring base station is composed of three parts: camera, GPRS system, electronic operation certificate reader and data processing system). When vehicles pass this arterial road, the camera will take pictures of vehicles After the physical license plate is processed by the image recognition system of the monitoring base station, the physical license plate number of the vehicle is obtained, and the electronic operation card reader/writer also obtains the electronic ticket number. If the comparison is not possible, the alarm can be processed immediately to prompt interception.
Chapter 2 Construction Content
2.1 System topology diagram
2.2 Electronic Operation Certificate
2.2.1 Quality requirements
Frequency works in the green free frequency band 2.4 GHz–2.488 GHz, 83 channels
Communication distance: 100 meters
Direct sequence spread spectrum: DSSS, strong anti-interference ability, high confidentiality
Communication speed 200 km/s
Battery powered, with unique wake-up function, can work continuously for more than 5 years
128-bit AES encryption algorithm to ensure that data cannot be copied
Working temperature: -40℃-80℃
Service life: read and write times ≥100000 times, data storage time ≥10 years
The unqualified rate of electronic tags submitted for use is less than three thousandths;
The consistency of the electronic label reaches more than 98%
Can resist ordinary physical collisions
After many low-temperature and high-temperature tests, the read-write performance of the electronic tag remains unchanged
2.2.2 Data requirements
Data content of electronic operation certificate:
Static data: vehicle owner’s name, ID number, contact number, license plate number, unit, first contact, contact number, brand model, time of purchase, engine number, frame number, affiliated company, time of issuance, management information, etc.
Dynamic data: effective time, audit time
2.2.3 Data security requirements
Security requirements for electronic operating certificates: data encryption technology using 128-bit AES security algorithm, decryption with data keys, completely prevents information changes and forgery.
2.3 Handheld Auditor
2.3.1 Hardware conditions
LTHP-01RF handheld PDA is a 2.4G electronic tag handheld reader that supports high-speed reading and writing of active electronic tags in the 2.4G frequency range provided by the company. The RFID PDA handheld intelligent identifier has high reliability and low power consumption. , Simple operation, modular design and other characteristics of the new generation of intelligent handheld data processing terminal equipment provides large-capacity lithium polymer batteries, with long working hours, and provides the company’s own ARM 32bit embedded software standard operating system platform (uL-OS ) To ensure that the embedded software system runs more stable and reliable. Embedded hardware circuit industrial design standards ensure the safety of the system and data in all aspects.
The device adopts a unique RFID antenna design to avoid blind areas of RFID card swiping, and adopts a unique power consumption meter in the uL-OS embedded operating system platform to manage the power consumption of handheld POS more scientifically. The high-definition, high-gray LCD screen makes The entire POS is more atmospheric and intuitive to operate. The mobile phone key structure design brings better hand feeling and reliability to the keys. The touch screen and touch pen make the graphic operation more intuitive, and the PDA-type handheld POS smart style is more obvious, avoiding cumbersome Key operation and input.
The outline drawing is as follows:
2.3.2 PDA hardware configuration
2.3.3 Electrical performance
2.3.4 Software function
Provide data management of electronic operation certificate, authorize to change or read various data
Provides USB2.0 data communication function, which can interact with the electronic operation certificate management platform through the USB port
The 128-bit security encryption algorithm that interacts with the electronic label data is encrypted and decrypted
Perform key management of encryption algorithms
Black and white electronic operation certificate list management: If you read the electronic operation certificate that has been reported to be lost, immediately report to the police.
To record the inspection data in a pipeline, so as to carry out various data statistics of the inspected vehicles on the electronic operation certificate management platform, as well as the quantitative management of the work of the inspection staff.
Instant access to simple data reports
2.4 Desktop Reader for Electronic Operation Certificate
Under the electronic operation certificate software management platform, carry out data interaction with the electronic operation certificate, read and write and modify data
Using USB power supply and USB2.0 data communication, plug and play, convenient and simple
2.5 Electronic Operation Certificate Management Software Platform
2.5.1 Function overview
The electronic operating certificate management software platform component is based on the SQL SERVER2000 database and adopts the modular development of the B/S architecture. The entire system structure adopts a multi-layer distributed structure and dual-machine hot backup to ensure data security. Through the Internet, the relevant data Information sharing, and setting different levels of permissions for adding, modifying, browsing, and statistics, so that the business work of management agencies at all levels can be dynamically managed in real time.
Electronic operation certificate management software functions:
Initialize the data of the electronic operation certificate and register it in the database. The registration content is ID number, contact phone number, license plate number, unit, first contact person, contact phone number, brand model, time of purchase, engine number, frame number, affiliated company, issuance time, valid time, etc., and the corresponding issuance The electronic label, and encrypt the data.
Query and modify the basic information of taxis, and form information retrieval, form reports
Report the loss of an electronic operation certificate: register the loss of the electronic operation certificate
Revocation of Electronic Operation Certificate: Revocation of invalid electronic operation certificate.
Various data of the electronic operation certificate can be summarized to form monthly reports, annual reports, statistics of invalid electronic operation certificates, annual review reports of electronic operation certificates, and auditor performance reports, etc., to provide powerful data analysis for the decision-making part.
Provide operation log: check the login usage of each operator. All operations of each operator are recorded.
Complete the key management of the electronic operation certificate to form a decentralized key.
Provide authority assignment function for each operator.
Backup and restore data function
Chapter 3 Principles of System Design
High reliability: The structure should be designed reasonably and a reliable backup strategy should be formulated; the equipment has a sufficient redundancy design to reduce data loss caused by failure.
Flexibility and scalability: According to future business growth and changes, the system can be smoothly expanded and upgraded, minimizing adjustments to the system architecture and existing equipment.
High security: Adopt internationally certified data encryption algorithm, effective authority management, to maximize the security and non-replication of data.
Economical: On the premise of meeting the functional requirements, try to spend less money, do more work, make full use of existing resources, and improve the performance-price ratio of the system as much as possible.
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